Bug 1315202 (CVE-2016-1979) - CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NSS (MFSA 2016-36)
Summary: CVE-2016-1979 nss: Use-after-free during processing of DER encoded keys in NS...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-1979
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1316003 1323648 1323649 1323650 1323651 1323652
Blocks: 1310521
TreeView+ depends on / blocked
 
Reported: 2016-03-07 09:02 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-17 04:13 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules) encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded certificate which, when parsed by an application compiled against the NSS library, could cause that application to crash, or execute arbitrary code using the permissions of the user running the application.
Clone Of:
Environment:
Last Closed: 2019-06-08 02:49:26 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:0591 0 normal SHIPPED_LIVE Moderate: nss, nss-util, and nspr security, bug fix, and enhancement update 2016-04-05 15:19:29 UTC
Red Hat Product Errata RHSA-2016:0684 0 normal SHIPPED_LIVE Moderate: nss and nspr security, bug fix, and enhancement update 2016-04-25 16:14:15 UTC
Red Hat Product Errata RHSA-2016:0685 0 normal SHIPPED_LIVE Moderate: nss, nspr, nss-softokn, and nss-util security, bug fix, and enhancement update 2016-04-25 15:57:46 UTC

Description Huzaifa S. Sidhpurwala 2016-03-07 09:02:25 UTC 
Mozilla developer Tim Taubert used the Address Sanitizer tool and software fuzzing to discover a use-after-free vulnerability while processing DER encoded keys in the Network Security Services (NSS) libraries. The vulnerability overwrites the freed memory with zeroes. This issue has been addressed in NSS 3.21.1, shipping in Firefox 45. 

External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2016-36
Comment 1 Huzaifa S. Sidhpurwala 2016-03-07 09:02:32 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Tim Taubert
Comment 2 Huzaifa S. Sidhpurwala 2016-03-09 08:43:39 UTC 
Created nss tracking bugs for this issue:

Affects: fedora-all [bug 1316003]
Comment 4 errata-xmlrpc 2016-04-05 11:20:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0591 https://rhn.redhat.com/errata/RHSA-2016-0591.html
Comment 5 errata-xmlrpc 2016-04-25 11:58:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0685 https://rhn.redhat.com/errata/RHSA-2016-0685.html
Comment 6 errata-xmlrpc 2016-04-25 12:15:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2016:0684 https://rhn.redhat.com/errata/RHSA-2016-0684.html
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