Heap buffer overflow via incorrect morphology parameters

Summary

ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations. A flaw was found in ImageMagick. An attacker can exploit an off-by-one error in the morphology validation by providing incorrect morphology parameters. This can lead to out-of-bounds heap buffer reads and heap buffer overflow, potentially causing memory access violations. This flaw in ImageMagick is rated as Low impact. An attacker can trigger a memory access violation by submitting a maliciously crafted image. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat does not currently list a fixing RHSA for this CVE.