Bug 1980253 (CVE-2020-36403)

Summary:	CVE-2020-36403 htslib: out-of-bounds write access in vcf_parse_format()
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jaruga, jmarshall
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	htslib 1.10.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-07-08 10:40:21 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:	1980255, 1980254
Bug Blocks:

Description Marian Rehak 2021-07-08 08:14:02 UTC

htslib 1.10 through 1.10.2 allows out-of-bounds write access in vcf_parse_format (called from vcf_parse and vcf_read).

Reference:

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/htslib/OSV-2020-955.yaml
https://github.com/samtools/htslib/commit/dcd4b7304941a8832fba2d0fc4c1e716e7a4e72c
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24097

Comment 1 Marian Rehak 2021-07-08 08:14:46 UTC

Created htslib tracking bugs for this issue:

Affects: epel-all [bug 1980255]
Affects: fedora-all [bug 1980254]

Comment 2 Product Security DevOps Team 2021-07-08 10:40:21 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.