Vulnerability Spotlight: Memory corruption vulnerability discovered in PowerISO

Summary: Cisco Talos discovered a memory corruption vulnerability, TALOS-2022-1644 (CVE-2022-41992), in the VHD file format parsing functionality of PowerISO 8.3, where a specially crafted file can trigger an out-of-bounds write. The flaw stems from the "Num of blocks" value in the CXSPARSE record not being validated properly, letting an attacker control the loop counter and achieve an arbitrary memory write, and PowerISO fixed it without changing the version number.
What's compelling: The fix shipped without a version bump, so users must confirm they are running PowerISO 8.3 with the most recent bug fixes - and Talos confirmed that version could still be exploited, leaving version strings useless as a patch check.

Read the original at Cisco Talos ↗

Topics: Vulnerabilities & Patching
Mentions: CVE-2022-41992
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