Bug 1665538 (CVE-2018-20534)

Summary:	CVE-2018-20534 libsolv: illegal address access in pool_whatprovides in src/pool.h
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jrohel
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:	2019-08-06 19:20:39 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:	1665539, 1670453, 1670454
Bug Blocks:	1665540

Description Laura Pardo 2019-01-11 16:59:13 UTC

A vulnerability was found in libsolv through 0.7.2. There is an illegal address access at src/pool.h (function pool_whatprovides) in libsolv.a that will cause a denial of service.


References:
https://bugzilla.redhat.com/show_bug.cgi?id=1652604

Upstream Patch:
https://github.com/openSUSE/libsolv/pull/291

Comment 1 Laura Pardo 2019-01-11 16:59:42 UTC

Created libsolv tracking bugs for this issue:

Affects: fedora-all [bug 1665539]

Comment 2 Riccardo Schirone 2019-01-29 14:56:52 UTC

When function testcase_str2solvid() is called on a malformed input, pool may be not correctly initialized and pool->whatprovides may be NULL, causing the program to crash when accessing an illegal address in pool_whatprovides().

Comment 5 errata-xmlrpc 2019-08-06 12:37:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2290 https://access.redhat.com/errata/RHSA-2019:2290

Comment 6 Product Security DevOps Team 2019-08-06 19:20:39 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-20534

Comment 7 errata-xmlrpc 2019-11-05 21:15:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3583 https://access.redhat.com/errata/RHSA-2019:3583