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Category — information disclosure
New Linux Flaws Allow Password Hash Theft via Core Dumps in Ubuntu, RHEL, Fedora

New Linux Flaws Allow Password Hash Theft via Core Dumps in Ubuntu, RHEL, Fedora

May 31, 2025 Vulnerability / Linux
Two information disclosure flaws have been identified in apport and systemd-coredump , the core dump handlers in Ubuntu, Red Hat Enterprise Linux, and Fedora, according to the Qualys Threat Research Unit (TRU). Tracked as CVE-2025-5054 and CVE-2025-4598 , both vulnerabilities are race condition bugs that could enable a local attacker to obtain access to access sensitive information. Tools like Apport and systemd-coredump are designed to handle crash reporting and core dumps in Linux systems. "These race conditions allow a local attacker to exploit a SUID program and gain read access to the resulting core dump," Saeed Abbasi, manager of product at Qualys TRU, said . A brief description of the two flaws is below - CVE-2025-5054 (CVSS score: 4.7) - A race condition in Canonical apport package up to and including 2.32.0 that allows a local attacker to leak sensitive information via PID-reuse by leveraging namespaces CVE-2025-4598 (CVSS score: 4.7) - A race condition i...
Microsoft Fixes 78 Flaws, 5 Zero-Days Exploited; CVSS 10 Bug Impacts Azure DevOps Server

Microsoft Fixes 78 Flaws, 5 Zero-Days Exploited; CVSS 10 Bug Impacts Azure DevOps Server

May 14, 2025 Endpoint Security / Vulnerability
Microsoft on Tuesday shipped fixes to address a total of 78 security flaws across its software lineup, including a set of five zero-days that have come under active exploitation in the wild. Of the 78 flaws resolved by the tech giant, 11 are rated Critical, 66 are rated Important, and one is rated Low in severity. Twenty-eight of these vulnerabilities lead to remote code execution, 21 of them are privilege escalation bugs, and 16 others are classified as information disclosure flaws. The updates are in addition to eight more security defects patched by the company in its Chromium-based Edge browser since the release of last month's Patch Tuesday update . The five vulnerabilities that have come under active exploitation in the wild are listed below - CVE-2025-30397 (CVSS score: 7.5) - Scripting Engine Memory Corruption Vulnerability CVE-2025-30400 (CVSS score: 7.8) - Microsoft Desktop Window Manager (DWM) Core Library Elevation of Privilege Vulnerability CVE-2025-3270...
High-Severity Flaw in PostgreSQL Allows Hackers to Exploit Environment Variables

High-Severity Flaw in PostgreSQL Allows Hackers to Exploit Environment Variables

Nov 15, 2024 Vulnerability / Database Security
Cybersecurity researchers have disclosed a high-severity security flaw in the PostgreSQL open-source database system that could allow unprivileged users to alter environment variables, and potentially lead to code execution or information disclosure. The vulnerability, tracked as CVE-2024-10979 , carries a CVSS score of 8.8. Environment variables are user-defined values that can allow a program to dynamically fetch various kinds of information, such as access keys and software installation paths, during runtime without having to hard-code them. In certain operating systems, they are initialized during the startup phase. "Incorrect control of environment variables in PostgreSQL PL/Perl allows an unprivileged database user to change sensitive process environment variables (e.g., PATH )," PostgreSQL said in an advisory released Thursday. "That often suffices to enable arbitrary code execution, even if the attacker lacks a database server operating system user." ...
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The Persistence Problem: Why Exposed Credentials Remain Unfixed—and How to Change That

The Persistence Problem: Why Exposed Credentials Remain Unfixed—and How to Change That

May 12, 2025Secrets Management / DevSecOps
Detecting leaked credentials is only half the battle. The real challenge—and often the neglected half of the equation—is what happens after detection. New research from GitGuardian's State of Secrets Sprawl 2025 report reveals a disturbing trend: the vast majority of exposed company secrets discovered in public repositories remain valid for years after detection, creating an expanding attack surface that many organizations are failing to address. According to GitGuardian's analysis of exposed secrets across public GitHub repositories, an alarming percentage of credentials detected as far back as 2022 remain valid today: "Detecting a leaked secret is just the first step," says GitGuardian's research team. "The true challenge lies in swift remediation." Why Exposed Secrets Remain Valid This persistent validity suggests two troubling possibilities: either organizations are unaware their credentials have been exposed (a security visibility problem),...
CISA Adds Twilio Authy and IE Flaws to Exploited Vulnerabilities List

CISA Adds Twilio Authy and IE Flaws to Exploited Vulnerabilities List

Jul 24, 2024 Vulnerability / Software Security
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The vulnerabilities are listed below - CVE-2012-4792 (CVSS score: 9.3) - Microsoft Internet Explorer Use-After-Free Vulnerability CVE-2024-39891 (CVSS score: 5.3) - Twilio Authy Information Disclosure Vulnerability CVE-2012-4792 is a decade-old use-after-free vulnerability in Internet Explorer that could allow a remote attacker to execute arbitrary code via a specially crafted site. It's currently not clear if the flaw has been subjected to renewed exploitation attempts, although it was abused as part of watering hole attacks targeting the Council on Foreign Relations (CFR) and Capstone Turbine Corporation websites back in December 2012. On the other hand, CVE-2024-39891 refers to an information disclosure bug in an unauthenticated endpoint that could be exploited to "accept ...
Microsoft's Final 2023 Patch Tuesday: 34 Flaws Fixed, Including 4 Critical

Microsoft's Final 2023 Patch Tuesday: 34 Flaws Fixed, Including 4 Critical

Dec 13, 2023 Patch Tuesday / Windows Security
Microsoft released its final set of Patch Tuesday updates for 2023, closing out 34 flaws in its software, making it one of the lightest releases in recent years. Of the 34 shortcomings, four are rated Critical and 30 are rated Important in severity. The fixes are in addition to  18 flaws  Microsoft addressed in its Chromium-based Edge browser since the release of  Patch Tuesday updates for November 2023 . According to data from the  Zero Day Initiative , the software giant has patched more than 900 flaws this year, making it one of the busiest years for Microsoft patches. For comparison, Redmond resolved 917 CVEs in 2022. While none of the vulnerabilities are listed as publicly known or under active attack at the time of release, some of the notable ones are listed below - CVE-2023-35628  (CVSS score: 8.1) - Windows MSHTML Platform Remote Code Execution Vulnerability CVE-2023-35630  (CVSS score: 8.8) - Internet Connection Sharing (ICS) Remote Code E...
Reptar: New Intel CPU Vulnerability Impacts Multi-Tenant Virtualized Environments

Reptar: New Intel CPU Vulnerability Impacts Multi-Tenant Virtualized Environments

Nov 15, 2023 Vulnerability / Hardware Security
Intel has released fixes to close out a high-severity flaw codenamed  Reptar  that impacts its desktop, mobile, and server CPUs. Tracked as  CVE-2023-23583  (CVSS score: 8.8), the  issue  has the potential to "allow escalation of privilege and/or information disclosure and/or denial of service via local access." Successful exploitation of the vulnerability could also permit a bypass of the CPU's security boundaries, according to Google Cloud, which described it as an issue stemming from how redundant prefixes are interpreted by the processor. "The impact of this vulnerability is demonstrated when exploited by an attacker in a multi-tenant virtualized environment, as the exploit on a guest machine causes the host machine to crash resulting in a Denial of Service to other guest machines running on the same host," Google Cloud's Phil Venables  said . "Additionally, the vulnerability could potentially lead to information disclosure or privilege escal...
Apache Tomcat Patches Important Security Vulnerabilities

Apache Tomcat Patches Important Security Vulnerabilities

Jul 24, 2018
The Apache Software Foundation (ASF) has released security updates to address several vulnerabilities in its Tomcat application server, one of which could allow a remote attacker to obtain sensitive information. Apache Tomcat is an open source web server and servlet system, which uses several Java EE specifications like Java Servlet, JavaServer Pages (JSP), Expression Language, and WebSocket, and provides a "pure Java" HTTP web server environment for Java concept to run in. Unlike Apache Struts2 vulnerabilities exploited to breach the systems of America credit reporting agency Equifax late last year, new Apache Tomcat vulnerabilities are less likely to be exploited in the wild. Apache Tomcat — Information Disclosure Vulnerability The more critical flaw ( CVE-2018-8037 ) of all in Apache Tomcat is an information disclosure vulnerability caused due to a bug in the tracking of connection closures which can lead to reuse of user sessions in a new connection. The vu...
Google Finds 7 Security Flaws in Widely Used Dnsmasq Network Software

Google Finds 7 Security Flaws in Widely Used Dnsmasq Network Software

Oct 03, 2017
Security researchers have discovered not one or two, but a total of seven security vulnerabilities in the popular open source Dnsmasq network services software, three of which could allow remote code execution on a vulnerable system and hijack it. Dnsmasq is a widely used lightweight network application tool designed to provide DNS (Domain Name System) forwarder, DHCP (Dynamic Host Configuration Protocol) server, router ads and network boot services for small networks. Dnsmasq comes pre-installed on various devices and operating systems, including Linux distributions such as Ubuntu and Debian, home routers, smartphones and Internet of Things (IoT) devices. A shodan scan for "Dnsmasq" reveals around 1.1 million instances worldwide. Recently, Google's security team reviewed Dnsmasq and discovered seven security issues, including DNS-related remote code execution, information disclosure, and denial-of-service (DoS) issues that can be triggered via DNS or DHCP. ...
This Hack Gives Linux Root Shell Just By Pressing 'ENTER' for 70 Seconds

This Hack Gives Linux Root Shell Just By Pressing 'ENTER' for 70 Seconds

Nov 16, 2016
A hacker with little more than a minute can bypass the authentication procedures on some Linux systems just by holding down the Enter key for around 70 seconds. The result? The act grants the hacker a shell with root privileges, which allows them to gain complete remote control over encrypted Linux machine. The security issue relies due to a vulnerability ( CVE-2016-4484 ) in the implementation of the Cryptsetup utility used for encrypting hard drives via Linux Unified Key Setup (LUKS), which is the standard implementation of disk encryption on a Linux-based operating system. The flaw actually is in the way the Cryptsetup utility handles password failures for the decryption process when a system boots up, which lets a user retry the password multiple times. What's even worse? Even if the user has tried up all 93 password attempts, the user is dropped to a shell (Busybox in Ubuntu) that has root privileges. In other words, if you enter a blank password 93 times – or s...
Personal Data of 50 Million Turkish Citizens Leaked Online

Personal Data of 50 Million Turkish Citizens Leaked Online

Apr 05, 2016
Personal details of nearly 50 Million Turkish citizens, including the country's President Recep Tayyip Erdogan, have been compromised and posted online in a massive security breach. A database, which contains 49,611,709 records , appeared on the website of an Icelandic group on Monday, offering download links to anyone interested. If confirmed, the data breach would be one of the biggest public breaches of its kind, effectively putting two-thirds of the Nation's population at risk of identity theft and fraud. However, The Associated Press (AP) reported on Monday that it was able to partially verify the authenticity of 8 out of 10 non-public Turkish ID numbers against the names in the data leak. 50 Million Turkish Citizens' Personal Data leaked Online The leaked database (about 6.6 GB file) contains the following information: First and last names National identifier numbers (TC Kimlik No) Gender City of birth Date of birth Full address ID...
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