Bug 1926990 (CVE-2021-3405)

Summary:	CVE-2021-3405 libebml: Heap overflow in EbmlString::ReadData and EbmlUnicodeString::ReadData
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dmitry, dominik, hdegoede, itamar, kwizart, martin.sourada
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libebml 1.4.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-09 22:09:59 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:	1926991, 1926992
Bug Blocks:	1926993

Description Pedro Sampaio 2021-02-09 19:27:09 UTC

A flaw was found in libebml. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.

Upstream issue:

https://github.com/Matroska-Org/libebml/issues/74

Comment 1 Pedro Sampaio 2021-02-09 19:27:54 UTC

Created libebml tracking bugs for this issue:

Affects: epel-all [bug 1926992]
Affects: fedora-all [bug 1926991]

Comment 2 Product Security DevOps Team 2021-02-09 22:09:59 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.