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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2020-12-04T00:00:00

Updated: 2024-08-04T16:18:45.612Z

Reserved: 2020-10-27T00:00:00

Link: CVE-2020-27771

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-12-04T15:15:10.787

Modified: 2024-11-21T05:21:48.293

Link: CVE-2020-27771

cve-icon Redhat

Severity : Low

Publid Date: 2019-10-14T00:00:00Z

Links: CVE-2020-27771 - Bugzilla