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CVE-2020-15900

Published: 28 July 2020

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.

Notes

AuthorNote
sbeattie
according to debian, jntroduced by
7ecbfda92b4c8dbf6f6c2bf8fc82020a29219eff (9.28rc1)

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
ghostscript
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal
Released (9.50~dfsg-5ubuntu4.1)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H