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Security Advisories

CVE-2023-30571

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-30571

Severity

5.3

Medium

CVSS V3

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Description

Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2023-30571
  • https://github.com/advisories/GHSA-cw7x-3mv7-w6xm
  • https://images.chainguard.dev/security/
  • https://groups.google.com/g/libarchive-announce
  • https://github.com/libarchive/libarchive/issues/1876

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