CVE-2024-32487 — less through 653 allows OS command execution via a newline character in the name
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 al
Published
2024-04-13T00:00:00.000Z
Last modified
2024-08-02T02:13:39.027Z
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2024-04-13T00:00:00.000Z
- Last modified: 2024-08-02T02:13:39.027Z
09References
- www.openwall.com — https://www.openwall.com/lists/oss-security/2024/04/13/2
- www.openwall.com — https://www.openwall.com/lists/oss-security/2024/04/12/5
- github.com — https://github.com/gwsw/less/commit/007521ac3c95bc76e3d59c6dbfe75d06c8075c33
- www.openwall.com — http://www.openwall.com/lists/oss-security/2024/04/15/1
- security.netapp.com — https://security.netapp.com/advisory/ntap-20240605-0009/
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2024/05/msg00018.html
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