Vulnerability Description
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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Imagemagick | Imagemagick | < 6.9.10-69 |
| Redhat | Enterprise Linux | 5.0 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1898290ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2021/03/msg00030.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1898290ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2021/03/msg00030.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
FAQ
What is CVE-2020-27771?
CVE-2020-27771 is a vulnerability with a CVSS score of 3.3 (LOW). 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...
How severe is CVE-2020-27771?
CVE-2020-27771 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27771?
Check the references section above for vendor advisories and patch information. Affected products include: Imagemagick Imagemagick, Redhat Enterprise Linux, Debian Debian Linux.