MitreCVELIST:CVE-2020-15900CVE-2020-15900
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The ‘rsearch’ calculation for the ‘post’ size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
References
git.ghostscript.com/?p=ghostpdl.git%3Ba=log
lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html
lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html
artifex.com/security-advisories/CVE-2020-15900
git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b
github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c
security.gentoo.org/glsa/202008-20
usn.ubuntu.com/4445-1/
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