In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls to GetPixelIndex() could result in values outside the range of representable for the unsigned char type. The patch casts the return value of GetPixelIndex() to ssize_t type to avoid this bug. This undefined behavior could be triggered when ImageMagick processes a crafted pdf file. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case. This flaw affects ImageMagick versions prior to 7.0.9-0.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1898290 | Exploit Issue Tracking Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html |
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History
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Information
Published : 2020-12-04 15:15
Updated : 2024-02-28 18:08
NVD link : CVE-2020-27771
Mitre link : CVE-2020-27771
CVE.ORG link : CVE-2020-27771
JSON object : View
Products Affected
debian
- debian_linux
redhat
- enterprise_linux
imagemagick
- imagemagick
CWE
CWE-190
Integer Overflow or Wraparound