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The Hacker News - Cybersecurity News and Analysis: Zimbra

New UnRAR Vulnerability Could Let Attackers Hack Zimbra Webmail Servers

New UnRAR Vulnerability Could Let Attackers Hack Zimbra Webmail Servers

June 29, 2022Ravie Lakshmanan
A new security vulnerability has been disclosed in RARlab's UnRAR utility that, if successfully exploited, could permit a remote attacker to execute arbitrary code on a system that relies on the binary. The flaw, assigned the identifier CVE-2022-30333, relates to a path traversal vulnerability in the Unix versions of UnRAR that can be triggered upon extracting a maliciously crafted RAR archive. Following responsible disclosure on May 4, 2022, the shortcoming was addressed by RarLab as part of  version 6.12  released on May 6. Other versions of the software, including those for Windows and Android operating systems, are not impacted. "An attacker is able to create files outside of the target extraction directory when an application or victim user extracts an untrusted archive," SonarSource researcher Simon Scannell  said  in a Tuesday report. "If they can write to a known location, they are likely to be able to leverage it in a way leading to the execution of arb
New Zimbra Email Vulnerability Could Let Attackers Steal Your Login Credentials

New Zimbra Email Vulnerability Could Let Attackers Steal Your Login Credentials

June 14, 2022Ravie Lakshmanan
A new high-severity vulnerability has been disclosed in the Zimbra email suite that, if successfully exploited, enables an unauthenticated attacker to steal cleartext passwords of users sans any user interaction. "With the consequent access to the victims' mailboxes, attackers can potentially escalate their access to targeted organizations and gain access to various internal services and steal highly sensitive information," SonarSource  said  in a report shared with The Hacker News. Tracked as  CVE-2022-27924  (CVSS score: 7.5), the issue has been characterized as a case of "Memcached poisoning with unauthenticated request," leading to a scenario where an adversary can inject malicious commands and siphon sensitive information. This is made possible by poisoning the IMAP route cache entries in the Memcached server that's used to look up Zimbra users and forward their HTTP requests to appropriate backend services. Memcached is an in-memory key-value sto
CISA adds recently disclosed Zimbra bug to its Exploited Vulnerabilities Catalog

CISA adds recently disclosed Zimbra bug to its Exploited Vulnerabilities Catalog

February 28, 2022Ravie Lakshmanan
The U.S. Cybersecurity and Infrastructure Security Agency (CISA)  expanded  its Known Exploited Vulnerabilities Catalog to include a recently disclosed zero-day flaw in the Zimbra email platform citing evidence of active exploitation in the wild. Tracked as  CVE-2022-24682  (CVSS score: 6.1), the issue concerns a cross-site scripting (XSS) vulnerability in the Calendar feature in Zimbra Collaboration Suite that could be abused by an attacker to trick users into downloading arbitrary JavaScript code simply by clicking a link to exploit URLs in phishing messages. The Known Exploited Vulnerabilities Catalog is a  repository  of security flaws that have been seen abused by threat actors in attacks and that are required to be patched by Federal Civilian Executive Branch (FCEB) agencies. The vulnerability came to light on February 3, 2022, when cybersecurity firm Volexity  identified  a series of targeted spear-phishing campaigns aimed at European government and media entities that leve
Hackers Exploited 0-Day Vulnerability in Zimbra Email Platform to Spy on Users

Hackers Exploited 0-Day Vulnerability in Zimbra Email Platform to Spy on Users

February 03, 2022Ravie Lakshmanan
A threat actor, likely Chinese in origin, is actively attempting to exploit a zero-day vulnerability in the Zimbra open-source email platform as part of spear-phishing campaigns that commenced in December 2021. The espionage operation — codenamed " EmailThief " — was detailed by cybersecurity company Volexity in a technical report published Thursday, noting that successful exploitation of the cross-site scripting (XSS) vulnerability could result in the execution of arbitrary JavaScript code in the context of the user's Zimbra session. Volexity attributed the intrusions, which started on December 14, 2021, to a previously undocumented hacking group it's tracking under the moniker TEMP_HERETIC, with the assaults aimed at European government and media entities. The zero-day bug impacts the most recent open-source edition of Zimbra running  version 8.8.15 . The attacks are believed to have occurred in two phases; the first stage aimed at reconnaissance and distribut
New Bug Could Let Attackers Hijack Zimbra Server by Sending Malicious Email

New Bug Could Let Attackers Hijack Zimbra Server by Sending Malicious Email

July 27, 2021Ravie Lakshmanan
Cybersecurity researchers have discovered multiple security vulnerabilities in Zimbra email collaboration software that could be potentially exploited to compromise email accounts by sending a malicious message and even achieve a full takeover of the mail server when hosted on a cloud infrastructure. The flaws — tracked as CVE-2021-35208 and CVE-2021-35208 — were discovered and reported in Zimbra 8.8.15 by researchers from code quality and security solutions provider SonarSource in May 2021. Mitigations have since been  released  in Zimbra versions 8.8.15 Patch 23 and 9.0.0 Patch 16. CVE-2021-35208  (CVSS score: 5.4) - Stored XSS Vulnerability in ZmMailMsgView.java CVE-2021-35209  (CVSS score: 6.1) - Proxy Servlet Open Redirect Vulnerability "A combination of these vulnerabilities could enable an unauthenticated attacker to compromise a complete Zimbra webmail server of a targeted organization,"  said  SonarSource vulnerability researcher, Simon Scannell, who identif
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