Bug 1671310 (CVE-2018-18508)

Summary:	CVE-2018-18508 nss: NULL pointer dereference in several CMS functions resulting in a denial of service
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bmcclain, dblechte, dfediuck, eedri, mgoldboi, michal.skrivanek, nss-nspr-maint, pvrabec, rh-spice-bugs, sbonazzo, sherold, yturgema
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nss 3.41.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-31 01:18:20 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:	1671311, 1673244, 1673245, 1673246, 1725111
Bug Blocks:	1671312

Description Andrej Nemec 2019-01-31 11:06:07 UTC

A NULL pointer dereference issue was found in several CMS function. A specially crafted data could possibly crash nss.

External References:

https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes

Comment 1 Andrej Nemec 2019-01-31 11:06:16 UTC

Created nss tracking bugs for this issue:

Affects: fedora-all [bug 1671311]

Comment 3 Huzaifa S. Sidhpurwala 2019-02-07 05:42:28 UTC

Upstream patch:

https://hg.mozilla.org/projects/nss/rev/08d1b0c1117f
https://hg.mozilla.org/projects/nss/rev/5e70b72131ac

Comment 5 errata-xmlrpc 2019-07-30 19:49:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1951 https://access.redhat.com/errata/RHSA-2019:1951

Comment 6 Product Security DevOps Team 2019-07-31 01:18:20 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-2018-18508

Comment 7 Huzaifa S. Sidhpurwala 2020-02-05 09:50:16 UTC

Mitigation:

This issue only affects applications compiled against NSS which use CMS (Cryptographic Message Syntax) API. Other applications are not affected.