CVE-2017-18220: graphicsmagick Use After Free

Vulnerability summary

CVE-2017-18220 is a high (CVSS 8.8) Use After Free vulnerability in graphicsmagick. EPSS estimates a 3.64% chance of exploitation in the next 30 days, higher than 89.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 05-03-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

The ReadOneJNGImage and ReadJNGImage functions in coders/png.c in GraphicsMagick 1.3.26 allow remote attackers to cause a denial of service (magick/blob.c CloseBlob use-after-free) or possibly have unspecified other impact via a crafted file, a related issue to CVE-2017-11403.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.