os/linux/elf.rb in Homebrew brew before 4.2.20 uses ldd to load ELF files obtained from…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
os/linux/elf.rb in Homebrew brew before 4.2.20 uses ldd to load ELF files obtained from untrusted sources, which allows attackers to achieve code execution via an ELF file with a custom .interp section. NOTE: this code execution would occur during an un-sandboxed binary relocation phase, which occurs before a user would expect execution of downloaded package content. (237d1e783f7ee261beaba7d3f6bde22da7148b0a was the tested vulnerable version.)
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42381
- 2026-10-03 Alias added: GHSA-phm2-c5jj-q34c
- 2026-10-19 EPSS moved to the 50th–90th percentile
References
Other 7
- https://github.com/Homebrew/brew/tree/237d1e783f7ee261beaba7d3f6bde22da7148b0a
- https://github.com/trailofbits/publications/blob/master/reviews/2023-08-28-homebrew-securityreview.pdf
- https://blog.trailofbits.com/2024/07/30/our-audit-of-homebrew/
- https://brew.sh/2024/07/30/homebrew-security-audit/
- https://github.com/Homebrew/brew/commit/916b37388d3851a8a93a8e9b4adc38873680ead7
- https://github.com/Homebrew/brew/releases/tag/4.2.20
- https://github.com/Homebrew/brew/pull/17136
Sources
- CVE-2024-42381 · CVE Program
- CVE-2024-42381 · NVD
- FIRST EPSS
- GHSA-phm2-c5jj-q34c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences