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

The U.S. Cybersecurity and Infrastructure Security Agency 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, the issue concerns a path traversal vulnerability in the Unix versions of UnRAR that can be triggered upon extracting a maliciously crafted RAR archive.

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 operation,” the agency said in an advisory.

On top of that, CISA has also added CVE-2022-34713 to the catalog after Microsoft, as part of its Patch Tuesday updates on August 9, revealed that it has seen indications that the vulnerability has been exploited in the wild.

Said to be a variant of the vulnerability publicly known as DogWalk, the shortcoming in the Microsoft Windows Support Diagnostic Tool component could be leveraged by a rogue actor to execute arbitrary code on susceptible systems by tricking a victim into opening a decoy file.

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