ImageMagick before 7.1.2-32 contains a time-of-check time-of-use symlink race vulnerability that allows attackers to bypass the path security policy when executing a magick script. Attackers can swap a checked path with a symlink during script execution to read files that the security policy is meant to block.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/ImageMagick/ImageMagick/commit/9e789499e67dbf5c4ee9fe1b72690…
disclosure@vulncheck.com
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-7q74-r26w-f…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-32-toctou-symlink…
disclosure@vulncheck.com