Bug 1979369 (CVE-2016-2225)

Summary:	CVE-2016-2225 uclibc: possible denial of service via specially crafted packet that will make the parser terminate early
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dvlasenk, jchaloup, nforro
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2021-07-06 16:40:33 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1979370
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2021-07-05 18:25:02 UTC

The __read_etc_hosts_r function in libc/inet/resolv.c in uClibc-ng before 1.0.12 allows remote DNS servers to cause a denial of service (infinite loop) via a crafted packet.

Reference:
https://www.openwall.com/lists/oss-security/2016/02/05/2

Upstream patch:
https://repo.or.cz/uclibc-ng.git/commit/6932f2282ba0578d6ca2f21eead920d6b78bc93c

Comment 1 Guilherme de Almeida Suckevicz 2021-07-05 18:25:23 UTC

Created uClibc tracking bugs for this issue:

Affects: fedora-all [bug 1979370]

Comment 2 Product Security DevOps Team 2021-07-06 16:40:33 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.