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Category — UnRAR
CISA Issues Warning on Active Exploitation of UnRAR Software for Linux Systems

CISA Issues Warning on Active Exploitation of UnRAR Software for Linux Systems

Aug 10, 2022
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a recently disclosed security flaw in the UnRAR utility to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. Tracked as CVE-2022-30333 (CVSS score: 7.5), the issue concerns a path traversal vulnerability in the Unix versions of UnRAR that can be triggered upon extracting a maliciously crafted RAR archive. This means that an adversary could exploit the flaw to drop arbitrary files on a target system that has the utility installed simply by decompressing the file. The vulnerability was  revealed  by SonarSource researcher Simon Scannell in late June. "RARLAB UnRAR on Linux and UNIX contains a directory traversal vulnerability, allowing an attacker to write to files during an extract (unpack) operation," the agency  said  in an advisory. Although the flaw affects any Linux application that uses UnRAR to extract an archive file, a successful exploi...
New UnRAR Vulnerability Could Let Attackers Hack Zimbra Webmail Servers

New UnRAR Vulnerability Could Let Attackers Hack Zimbra Webmail Servers

Jun 29, 2022
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...
4 Ways to Keep MFA From Becoming too Much of a Good Thing

4 Ways to Keep MFA From Becoming too Much of a Good Thing

Feb 11, 2025IT Security / Threat Protection
Multi-factor authentication (MFA) has quickly become the standard for securing business accounts. Once a niche security measure, adoption is on the rise across industries. But while it's undeniably effective at keeping bad actors out, the implementation of MFA solutions can be a tangled mess of competing designs and ideas. For businesses and employees, the reality is that MFA sometimes feels like too much of a good thing. Here are a few reasons why MFA isn't implemented more universally. 1. Businesses see MFA as a cost center MFA for businesses isn't free, and the costs of MFA can add up over time. Third-party MFA solutions come with subscription costs, typically charged per user. Even built-in options like Microsoft 365's MFA features can cost extra depending on your Microsoft Entra license. Plus, there's the cost of training employees to use MFA and the time IT takes to enroll them. If MFA increases help desk calls, support costs go up too. While these expenses are far less t...
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