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OpenSSH Releases Patch for New Pre-Auth Double Free Vulnerability

OpenSSH Releases Patch for New Pre-Auth Double Free Vulnerability

Feb 06, 2023 Authentication / Vulnerability
The maintainers of OpenSSH have released OpenSSH 9.2 to address a number of security bugs, including a memory safety vulnerability in the OpenSSH server (sshd). Tracked as  CVE-2023-25136 , the shortcoming has been classified as a pre-authentication double free vulnerability that was introduced in version 9.1. "This is not believed to be exploitable, and it occurs in the unprivileged pre-auth process that is subject to chroot(2) and is further sandboxed on most major platforms," OpenSSH disclosed in its  release notes  on February 2, 2023. Credited with  reporting  the flaw to OpenSSH in July 2022 is security researcher Mantas Mikulenas. OpenSSH is the open source implementation of the secure shell ( SSH ) protocol that offers a suite of services for encrypted communications over an unsecured network in a client-server architecture. "The exposure occurs in the chunk of memory freed twice, the 'options.kex_algorithms,'" Saeed Abbasi, manager of vulnera
Warning: Hackers Actively Exploiting Zero-Day in Fortra's GoAnywhere MFT

Warning: Hackers Actively Exploiting Zero-Day in Fortra's GoAnywhere MFT

Feb 04, 2023 Zero-Day / Vulnerability
A zero-day vulnerability affecting Fortra's GoAnywhere MFT managed file transfer application is being actively exploited in the wild. Details of the flaw were first  publicly shared  by security reporter Brian Krebs on Mastodon. No public advisory has been published by Fortra. The vulnerability is a case of remote code injection that requires access to the administrative console of the application, making it imperative that the systems are not exposed to the public internet. According to security researcher Kevin Beaumont, there are over 1,000 on-premise instances that are publicly accessible over the internet, a majority of which are located in the U.S. "The Fortra advisory Krebs quoted advises GoAnywhere MFT customers to review all administrative users and monitor for unrecognized usernames, especially those created by system," Rapid7 researcher Caitlin Condon  said . "The logical deduction is that Fortra is likely seeing follow-on attacker behavior that inc
Atlassian's Jira Service Management Found Vulnerable to Critical Vulnerability

Atlassian's Jira Service Management Found Vulnerable to Critical Vulnerability

Feb 03, 2023 Cloud Security / Vulnerability
Atlassian has released fixes to resolve a critical security flaw in Jira Service Management Server and Data Center that could be abused by an attacker to pass off as another user and gain unauthorized access to susceptible instances. The  vulnerability  is tracked as  CVE-2023-22501  (CVSS score: 9.4) and has been described as a case of broken authentication with low attack complexity. "An authentication vulnerability was discovered in Jira Service Management Server and Data Center which allows an attacker to impersonate another user and gain access to a Jira Service Management instance under certain circumstances," Atlassian  said . "With write access to a User Directory and outgoing email enabled on a Jira Service Management instance, an attacker could gain access to signup tokens sent to users with accounts that have never been logged into." The tokens, Atlassian noted, can be obtained in either of the two scenarios - If the attacker is included on Jira i
New High-Severity Vulnerabilities Discovered in Cisco IOx and F5 BIG-IP Products

New High-Severity Vulnerabilities Discovered in Cisco IOx and F5 BIG-IP Products

Feb 03, 2023 Network Security / Vulnerability
F5 has warned of a high-severity flaw impacting BIG-IP appliances that could lead to denial-of-service (DoS) or arbitrary code execution. The issue is rooted in the iControl Simple Object Access Protocol ( SOAP ) interface and affects the following versions of BIG-IP - 13.1.5 14.1.4.6 - 14.1.5 15.1.5.1 - 15.1.8 16.1.2.2 - 16.1.3, and 17.0.0 "A format string vulnerability exists in iControl SOAP that allows an authenticated attacker to crash the iControl SOAP CGI process or, potentially execute arbitrary code," the company  said  in an advisory. "In appliance mode BIG-IP, a successful exploit of this vulnerability can allow the attacker to cross a security boundary." Tracked as CVE-2023-22374 (CVSS score: 7.5/8.5), security researcher Ron Bowes of Rapid7 has been credited with discovering and reporting the flaw on December 6, 2022. Given that the iCOntrol SOAP interface runs as root, a successful exploit could permit a threat actor to remotely trigger co
Researchers Uncover New Bugs in Popular ImageMagick Image Processing Utility

Researchers Uncover New Bugs in Popular ImageMagick Image Processing Utility

Feb 01, 2023 Vulnerability
Cybersecurity researchers have disclosed details of two security flaws in the open source  ImageMagick software  that could potentially lead to a denial-of-service (DoS) and information disclosure. The two issues, which were identified by Latin American cybersecurity firm Metabase Q in version 7.1.0-49, were  addressed  in ImageMagick  version 7.1.0-52 , released in November 2022. A brief description of the flaws is as follows - CVE-2022-44267  - A DoS vulnerability that arises when parsing a PNG image with a filename that's a single dash ("-") CVE-2022-44268  - An information disclosure vulnerability that could be exploited to read arbitrary files from a server when parsing an image That said, an attacker must be able to upload a malicious image to a website using ImageMagick so as to weaponize the flaws remotely. The specially crafted image, for its part, can be created by inserting a  text chunk  that specifies some metadata of the attacker's choice (e.g.,
Additional Supply Chain Vulnerabilities Uncovered in AMI MegaRAC BMC Software

Additional Supply Chain Vulnerabilities Uncovered in AMI MegaRAC BMC Software

Feb 01, 2023 Server and Cloud Security
Two more supply chain security flaws have been disclosed in AMI MegaRAC Baseboard Management Controller (BMC) software, nearly two months after  three security vulnerabilities  were brought to light in the same product. Firmware security firm Eclypsium  said  the two shortcomings were held back until now to provide AMI additional time to engineer appropriate mitigations. The issues, collectively tracked as  BMC&C , could act as a springboard for cyber attacks, enabling threat actors to obtain remote code execution and unauthorized device access with superuser permissions. The two new flaws in question are as follows - CVE-2022-26872  (CVSS score: 8.3) - ​​Password reset interception via API CVE-2022-40258  (CVSS score: 5.3) - Weak password hashes for Redfish and API Specifically, MegaRAC has been found to use the MD5 hashing algorithm with a global salt for older devices, or  SHA-512 with per user salts  on newer appliances, potentially allowing a threat actor to crack th
QNAP Fixes Critical Vulnerability in NAS Devices with Latest Security Updates

QNAP Fixes Critical Vulnerability in NAS Devices with Latest Security Updates

Jan 31, 2023 Data Security / Vulnerability
Taiwanese company QNAP has released updates to remediate a critical security flaw affecting its network-attached storage (NAS) devices that could lead to arbitrary code injection. Tracked as  CVE-2022-27596 , the vulnerability is rated 9.8 out of a maximum of 10 on the CVSS scoring scale. It affects QTS 5.0.1 and QuTS hero h5.0.1. "If exploited, this vulnerability allows remote attackers to inject malicious code," QNAP  said  in an advisory released Monday. The exact technical specifics surrounding the flaw are unclear, but the NIST National Vulnerability Database (NVD) has categorized it as an SQL injection vulnerability. This means an attacker could send specially crafted SQL queries such that they could be weaponized to bypass security controls and access or alter valuable information. "Just as it may be possible to read sensitive information, it is also possible to make changes or even delete this information with a SQL injection attack," according to  MI
VMware Releases Patches for Critical vRealize Log Insight Software Vulnerabilities

VMware Releases Patches for Critical vRealize Log Insight Software Vulnerabilities

Jan 25, 2023 Software Security / VMware
VMware on Tuesday released software to remediate four security vulnerabilities affecting  vRealize Log Insight  (aka Aria Operations for Logs) that could expose users to remote code execution attacks. Two of the flaws are critical, carrying a severity rating of 9.8 out of a maximum of 10, the virtualization services provider noted in its first security bulletin for 2023. Tracked as CVE-2022-31706 and CVE-2022-31704, the directory traversal and broken access control issues could be exploited by a threat actor to achieve remote code execution irrespective of the difference in the attack pathway. "An unauthenticated, malicious actor can inject files into the operating system of an impacted appliance which can result in remote code execution," the company  said  of the two shortcomings. A third vulnerability relates to a deserialization flaw (CVE-2022-31710, CVSS score: 7.5) that could be weaponized by an unauthenticated attacker to trigger a denial-of-service (DoS) conditi
Security Navigator Research: Some Vulnerabilities Date Back to the Last Millennium

Security Navigator Research: Some Vulnerabilities Date Back to the Last Millennium

Jan 24, 2023 Vulnerability Management
Vulnerability analysis results in  Orange Cyberdefenses' Security Navigator  show that some vulnerabilities first discovered in 1999 are still found in networks today. This is concerning. Age of VOC findings Our Vulnerability Scans are performed on a recurring basis, which provides us the opportunity to examine the difference between when a scan was performed on an Asset, and when a given finding on that Asset was reported. We can call that the finding 'Age'. If the findings first reported are not addressed, they will occur in more scans over time with increasing Age, and so we can track how the Age of reported findings changes over time. As the chart below clearly illustrates, the majority of real findings in our dataset, across all Severity levels, are between 75 and 225 days old. There is a second 'peak' at around 300 days, which we suspect has more to do with the age of the data in the dataset and can therefore be ignored. Finally, there is a fascinating 
Chinese Hackers Exploited Recent Fortinet Flaw as 0-Day to Drop Malware

Chinese Hackers Exploited Recent Fortinet Flaw as 0-Day to Drop Malware

Jan 20, 2023 Firewall / Network Security
A suspected China-nexus threat actor exploited a recently patched vulnerability in Fortinet FortiOS SSL-VPN as a zero-day in attacks targeting a European government entity and a managed service provider (MSP) located in Africa. Telemetry evidence gathered by Google-owned Mandiant indicates that the exploitation occurred as early as October 2022, at least nearly two months before fixes were released. "This incident continues China's pattern of exploiting internet facing devices, specifically those used for managed security purposes (e.g., firewalls, IPS\IDS appliances etc.)," Mandiant researchers  said  in a technical report. The attacks entailed the use of a sophisticated backdoor dubbed  BOLDMOVE , a Linux variant of which is specifically designed to run on Fortinet's FortiGate firewalls. The intrusion vector in question relates to the exploitation of  CVE-2022-42475 , a heap-based buffer overflow vulnerability in FortiOS SSL-VPN that could result in unauthenti
New Microsoft Azure Vulnerability Uncovered — EmojiDeploy for RCE Attacks

New Microsoft Azure Vulnerability Uncovered — EmojiDeploy for RCE Attacks

Jan 19, 2023 Cloud Security / Data Security
A new critical remote code execution (RCE) flaw discovered impacting multiple services related to Microsoft Azure could be exploited by a malicious actor to completely take control of a targeted application. "The vulnerability is achieved through  CSRF  (cross-site request forgery) on the ubiquitous SCM service Kudu," Ermetic researcher Liv Matan  said  in a report shared with The Hacker News. "By abusing the vulnerability, attackers can deploy malicious ZIP files containing a payload to the victim's Azure application." The Israeli cloud infrastructure security firm, which dubbed the shortcoming  EmojiDeploy , said it could further enable the theft of sensitive data and lateral movement to other Azure services. Microsoft has since fixed the vulnerability as of December 6, 2022, following responsible disclosure on October 26, 2022, in addition to awarding a bug bounty of $30,000. The Windows maker  describes  Kudu as the "engine behind a number of feat
Git Users Urged to Update Software to Prevent Remote Code Execution Attacks

Git Users Urged to Update Software to Prevent Remote Code Execution Attacks

Jan 18, 2023 DevOpsSec / Software Security
The maintainers of the  Git  source code version control system have released updates to remediate two critical vulnerabilities that could be exploited by a malicious actor to achieve remote code execution. The flaws, tracked as  CVE-2022-23521  and  CVE-2022-41903 , impacts the following versions of Git: v2.30.6, v2.31.5, v2.32.4, v2.33.5, v2.34.5, v2.35.5, v2.36.3, v2.37.4, v2.38.2, and v2.39.0. Patched versions include v2.30.7, v2.31.6, v2.32.5, v2.33.6, v2.34.6, v2.35.6, v2.36.4, v2.37.5, v2.38.3, and v2.39.1. X41 D-Sec security researchers Markus Vervier and Eric Sesterhenn as well as GitLab's Joern Schneeweisz have been credited with reporting the bugs. "The most severe issue discovered allows an attacker to trigger a heap-based memory corruption during clone or pull operations, which might result in code execution," the German cybersecurity company  said  of CVE-2022-23521. CVE-2022-41903, also a critical vulnerability, is triggered during an archive operatio
Zoho ManageEngine PoC Exploit to be Released Soon - Patch Before It's Too Late!

Zoho ManageEngine PoC Exploit to be Released Soon - Patch Before It's Too Late!

Jan 17, 2023 Cyber Threat / Vulnerability
Users of Zoho ManageEngine are being urged to patch their instances against a critical security vulnerability ahead of the release of a proof-of-concept ( PoC ) exploit code. The issue in question is  CVE-2022-47966 , an unauthenticated remote code execution vulnerability affecting several products due to the use of an outdated third-party dependency, Apache Santuario. "This vulnerability allows an unauthenticated adversary to execute arbitrary code," Zoho  warned  in an advisory issued late last year, noting that it affects all ManageEngine setups that have the SAML single sign-on (SSO) feature enabled, or had it enabled in the past. Horizon3.ai has now released Indicators of Compromise (IOCs) associated with the flaw, stating that it was able to successfully reproduce the exploit against ManageEngine ServiceDesk Plus and ManageEngine Endpoint Central products. "The vulnerability is easy to exploit and a good candidate for attackers to 'spray and pray' acr
Cacti Servers Under Attack as Majority Fail to Patch Critical Vulnerability

Cacti Servers Under Attack as Majority Fail to Patch Critical Vulnerability

Jan 14, 2023 Server Security / Patch Management
A majority of internet-exposed Cacti servers have not been patched against a recently patched critical security vulnerability that has come under active exploitation in the wild. That's according to attack surface management platform Censys, which  found  only 26 out of a total of 6,427 servers to be running a  patched version  of Cacti (1.2.23 and 1.3.0). The  issue  in question relates to  CVE-2022-46169  (CVSS score: 9.8), a combination of authentication bypass and command injection that enables an unauthenticated user to execute arbitrary code on an affected version of the open-source, web-based monitoring solution. Details about the flaw, which impacts versions 1.2.22 and below, were first revealed by SonarSource. The flaw was reported to the project maintainers on December 2, 2022. "A hostname-based authorization check is not implemented safely for most installations of Cacti," SonarSource researcher Stefan Schiller  noted  earlier this month, adding "uns
Cisco Issues Warning for Unpatched Vulnerabilities in EoL Business Routers

Cisco Issues Warning for Unpatched Vulnerabilities in EoL Business Routers

Jan 14, 2023 Network Security / Bug Report
Cisco has warned of two security vulnerabilities affecting end-of-life (EoL) Small Business RV016, RV042, RV042G, and RV082 routers that it said will not be fixed, even as it acknowledged the public availability of proof-of-concept (PoC) exploit. The  issues  are rooted in the router's web-based management interface, enabling a remote adversary to sidestep authentication or execute malicious commands on the underlying operating system. The most severe of the two is CVE-2023-20025 (CVSS score: 9.0), which is the result of improper validation of user input within incoming HTTP packets. A threat actor could exploit it remotely by sending a specially crafted HTTP request to vulnerable routers' web-based management interface to bypass authentication and obtain elevated permissions. The lack of adequate validation is also the reason behind the second flaw tracked as CVE-2023-20026 (CVSS score: 6.5), permitting an attacker with valid admin credentials to achieve root-level privi
FortiOS Flaw Exploited as Zero-Day in Attacks on Government and Organizations

FortiOS Flaw Exploited as Zero-Day in Attacks on Government and Organizations

Jan 13, 2023 Zero-Day / Incident Response
A zero-day vulnerability in FortiOS SSL-VPN that Fortinet addressed last month was exploited by unknown actors in attacks targeting governments and other large organizations. "The complexity of the exploit suggests an advanced actor and that it is highly targeted at governmental or government-related targets," Fortinet researchers  said  in a post-mortem analysis published this week. The attacks entailed the exploitation of  CVE-2022-42475 , a heap-based buffer overflow flaw that could enable an unauthenticated remote attacker to execute arbitrary code via specifically crafted requests. The infection chain analyzed by the company shows that the end goal was to deploy a generic Linux implant modified for FortiOS that's equipped to compromise Fortinet's intrusion prevention system ( IPS ) software and establish connections with a remote server to download additional malware and execute commands. Fortinet said it was unable to recover the payloads used in the subse
Experts Detail Chromium Browser Security Flaw Putting Confidential Data at Risk

Experts Detail Chromium Browser Security Flaw Putting Confidential Data at Risk

Jan 12, 2023 Browser Security / Data Safety
Details have emerged about a now-patched vulnerability in Google Chrome and Chromium-based browsers that, if successfully exploited, could have made it possible to siphon files containing confidential data. "The issue arose from the way the browser interacted with  symlinks  when processing files and directories," Imperva researcher Ron Masas  said . "Specifically, the browser did not properly check if the symlink was pointing to a location that was not intended to be accessible, which allowed for the theft of sensitive files." Google characterized the medium-severity issue (CVE-2022-3656) as a case of insufficient data validation in File System,  releasing   fixes  for it in versions 107 and 108 released in October and November 2022. Dubbed SymStealer, the vulnerability, at its core, relates to a type of weakness known as symbolic link (aka symlink) following, which  occurs  when an attacker abuses the feature to bypass the file system restrictions of a progra
Twitter Denies Hacking Claims, Assures Leaked User Data Not from its System

Twitter Denies Hacking Claims, Assures Leaked User Data Not from its System

Jan 12, 2023 Data Security / Privacy
Twitter on Wednesday said that its investigation found "no evidence" that users' data sold online was obtained by exploiting any security vulnerabilities in its systems. "Based on information and intel analyzed to investigate the issue, there is no evidence that the data being sold online was obtained by exploiting a vulnerability of Twitter systems," the company  said  in a statement. "The data is likely a collection of data already publicly available online through different sources." The disclosure comes in the wake of  multiple   reports  that Twitter data belonging to millions of users – 5.4 million in November 2022, 400 million in December 2022, and 200 million last week – have been made available for sale on online criminal forums. The social media giant further said the breach "could not be correlated with the previously reported incident, nor with any new incident," adding no passwords were exposed. The two datasets published in
Severe Security Flaw Found in "jsonwebtoken" Library Used by 22,000+ Projects

Severe Security Flaw Found in "jsonwebtoken" Library Used by 22,000+ Projects

Jan 10, 2023 Software Security / Supply Chain
UPDATE: CVE-2022-23529 Retracted Following Review Auth0 and Unit 42 said they are formally retracting CVE-2022-23529 (CVSS score: 7.6) based on the fact that several prerequisites are essential for exploitation. The cybersecurity company said "important security checks" have been added to fix the problem. "The security issue remains a concern only when the jsonwebtoken library is used in an insecure way," the maintainers said in an advisory. "In such a scenario, if all the prerequisites are met, the issue may be exploitable; however, the source of this risk is the calling code and not the library itself." A high-severity security flaw has been disclosed in the open source jsonwebtoken (JWT) library that, if successfully exploited, could lead to remote code execution on a target server. "By exploiting this  vulnerability , attackers could achieve remote code execution (RCE) on a server verifying a maliciously crafted JSON web token (JWT) reques
Fortinet and Zoho Urge Customers to Patch Enterprise Software Vulnerabilities

Fortinet and Zoho Urge Customers to Patch Enterprise Software Vulnerabilities

Jan 05, 2023 Application Security / SQLi
Fortinet has warned of a high-severity flaw affecting multiple versions of FortiADC application delivery controller that could lead to the execution of arbitrary code. "An improper neutralization of special elements used in an OS command vulnerability in FortiADC may allow an authenticated attacker with access to the web GUI to execute unauthorized code or commands via specifically crafted HTTP requests," the company  said  in an advisory. The vulnerability, tracked as CVE-2022-39947 (CVSS score: 8.6) and internally discovered by its product security team, impacts the following versions - FortiADC version 7.0.0 through 7.0.2 FortiADC version 6.2.0 through 6.2.3 FortiADC version 6.1.0 through 6.1.6 FortiADC version 6.0.0 through 6.0.4 FortiADC version 5.4.0 through 5.4.5 Users are recommended to upgrade to FortiADC versions 6.2.4 and 7.0.2 as and when they become available. The  January 2023 patches  also address a number of command injection vulnerabilities in Fo
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