Bug 2274980 (CVE-2024-32487)

Summary: CVE-2024-32487 less: OS command injection
Product: [Other] Security Response Reporter: ybuenos
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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An OS command injection flaw was found in Less. Since quoting is mishandled in filename.c, opening files with attacker-controlled file names can lead to OS command execution. Exploitation requires the LESSOPEN environment variable, but this is set by default in many common cases.
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Bug Depends On: 2274981    
Bug Blocks: 2274983    

Description ybuenos 2024-04-14 14:03:02 UTC 
less through 653 allows OS command execution via a newline character in the name of a file, because quoting is mishandled in filename.c. Exploitation typically requires use with attacker-controlled file names, such as the files extracted from an untrusted archive. Exploitation also requires the LESSOPEN environment variable, but this is set by default in many common cases.

https://github.com/gwsw/less/commit/007521ac3c95bc76e3d59c6dbfe75d06c8075c33
https://www.openwall.com/lists/oss-security/2024/04/12/5
https://www.openwall.com/lists/oss-security/2024/04/13/2
Comment 1 ybuenos 2024-04-14 14:03:17 UTC 
Created less tracking bugs for this issue:

Affects: fedora-all [bug 2274981]