Bug 1943214 (CVE-2020-24994)

Summary:	CVE-2020-24994 libass: Stack overflow in the parse_tag function in libass/ass_parse.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	martin.sourada
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-03-25 17:35:25 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1943215, 1943216
Bug Blocks:

Description Pedro Sampaio 2021-03-25 15:12:44 UTC

Stack overflow in the parse_tag function in libass/ass_parse.c in libass before 0.14.0 allows remote attackers to cause a denial of service or remote code execution via a crafted file.

References:

https://github.com/libass/libass/issues/422
https://github.com/libass/libass/issues/423

Comment 1 Pedro Sampaio 2021-03-25 15:13:13 UTC

Created libass tracking bugs for this issue:

Affects: epel-all [bug 1943216]
Affects: fedora-all [bug 1943215]

Comment 2 Product Security DevOps Team 2021-03-25 17:35:25 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.