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Red Hat: RHSA-2015:2068-01 Critical: NSS Buffer Overflow Issue

red hat
Calendar Grey November 18, 2015
Dist Redhat Esm H88
Crucial updates for nss, nss-util, and nspr have been released to fix severe security vulnerabilities in Red Hat Enterprise Linux. Please ensure you upgrade immediately!
Updated nss, nss-util, and nspr packages that fix three security issues are now available for Red Hat Enterprise Linux 6.2 and 6.4 Advanced Update Support, and Red Hat Enterprise L...

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities.
A use-after-poison flaw and a heap-based buffer overflow flaw were found in the way NSS parsed certain ASN.1 structures. An attacker could use these flaws to cause NSS to crash or execute arbitrary code with the permissions of the user running an application compiled against the NSS library. (CVE-2015-7181, CVE-2015-7182)
A heap-based buffer overflow was found in NSPR. An attacker could use this flaw to cause NSPR to crash or execute arbitrary code with the permissions of the user running an application compiled against the NSPR library. (CVE-2015-7183)
Note: Applications using NSPR's PL_ARENA_ALLOCATE, PR_ARENA_ALLOCATE, PL_ARENA_GROW, or PR_ARENA_GROW macros need to be rebuilt against the fixed nspr packages to completely resolve the CVE-2015-7183 issue. This erratum includes nss and nss-utils packages rebuilt against the fixed nspr version.
Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Tyson Smith, David Keeler, and Ryan Sleevi as the original reporters.
All nss, nss-util, and nspr users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory buffer overflow critical Red Hat Enterprise Linux NSS NSPR caching attack prevention

References

https://access.redhat.com/security/cve/CVE-2015-7181 https://access.redhat.com/security/cve/CVE-2015-7182 https://access.redhat.com/security/cve/CVE-2015-7183 https://access.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux HPC Node EUS (v. 6.5):
Source: nspr-4.10.6-2.el6_5.src.rpm nss-3.16.1-9.el6_5.src.rpm nss-util-3.16.1-3.el6_5.src.rpm
x86_64: nspr-4.10.6-2.el6_5.i686.rpm nspr-4.10.6-2.el6_5.x86_64.rpm nspr-debuginfo-4.10.6-2.el6_5.i686.rpm nspr-debuginfo-4.10.6-2.el6_5.x86_64.rpm nss-3.16.1-9.el6_5.i686.rpm nss-3.16.1-9.el6_5.x86_64.rpm nss-debuginfo-3.16.1-9.el6_5.i686.rpm nss-debuginfo-3.16.1-9.el6_5.x86_64.rpm nss-sysinit-3.16.1-9.el6_5.x86_64.rpm nss-tools-3.16.1-9.el6_5.x86_64.rpm nss-util-3.16.1-3.el6_5.i686.rpm nss-util-3.16.1-3.el6_5.x86_64.rpm nss-util-debuginfo-3.16.1-3.el6_5.i686.rpm nss-util-debuginfo-3.16.1-3.el6_5.x86_64.rpm
Red Hat Enterprise Linux HPC Node EUS (v. 6.6):
Source: nspr-4.10.8-2.el6_6.src.rpm nss-3.19.1-4.el6_6.src.rpm nss-util-3.19.1-2.el6_6.src.rpm
x86_64: nspr-4.10.8-2.el6_6.i686.rpm nspr-4.10.8-2.el6_6.x86_64.rpm nspr-debuginfo-4.10.8-2.el6_6.i686.rpm nspr-debuginfo-4.10.8-2.el6_6.x86_64.rpm nss-3.19.1-4.el6_6.i686.rpm nss-3.19.1-4.el6_6.x86_64.rpm nss-debuginfo-3.19.1-4.el6_6.i686.rpm nss-debuginfo-3.19.1-4.el6_6.x86_64.rpm nss-sysinit-3.19.1-4.el6_6.x86_64.rpm nss-tools-3.19.1-4.el6_6.x86_64.rpm nss-util-3.19.1-2.el6_6.i686.rpm nss-util-3.19.1-2.el6_6.x86_64.rpm nss-util-debuginfo-3.19.1-2.el6_6.i686.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:2068-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:2068.html
Issue date: 2015-11-18

Topic

Updated nss, nss-util, and nspr packages that fix three security issues arenow available for Red Hat Enterprise Linux 6.2 and 6.4 Advanced UpdateSupport, and Red Hat Enterprise Linux 6.5 and 6.6 Extended Update Support.Red Hat Product Security has rated this update as having Critical securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory buffer overflow critical Red Hat Enterprise Linux NSS NSPR caching attack prevention

Relevant Releases Architectures

Red Hat Enterprise Linux AUS (v. 6.2 server) - x86_64

Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5) - x86_64

Red Hat Enterprise Linux HPC Node EUS (v. 6.5) - x86_64

Red Hat Enterprise Linux HPC Node EUS (v. 6.6) - x86_64

Red Hat Enterprise Linux Server AUS (v. 6.4) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server EUS (v. 6.5) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server EUS (v. 6.6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.5) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.6) - i386, ppc64, s390x, x86_64

Bugs Fixed

1269345 - CVE-2015-7181 nss: use-after-poison in sec_asn1d_parse_leaf() (MFSA 2015-133)

1269351 - CVE-2015-7182 nss: ASN.1 decoder heap overflow when decoding constructed OCTET STRING that mixes indefinite and definite length encodings (MFSA 2015-133)

1269353 - CVE-2015-7183 nspr: heap-buffer overflow in PL_ARENA_ALLOCATE (MFSA 2015-133)

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