Skip to main content

Improper Link Resolution Before File Access ('Link Following')

CVE-2023-28642

High
7.8/10

Summary

The runc is a CLI tool for spawning and running containers according to the OCI specification. It was found in prior to version 1.1.5, that AppArmor can be bypassed when "/proc" inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked "/proc". Users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.This issue has same fix as CVE-2023-27561.

  • LOW
  • LOCAL
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • HIGH

CWE-59 - Improper Link Resolution Before File Access

'Improper link resolution before file access' occurs when software accesses a file resource but fails to verify that the file isn't a link or shortcut to another file. An attacker can potentially gain access to arbitrary files and from there the impact can vary, depending on the application, from sensitive data exposure to remote code execution.

References

Advisory Timeline

  • Published