Issued:
2015-08-24
Updated:
2015-08-24

RHSA-2015:1664 - Moderate: nss security, bug fix, and enhancement update

Synopsis

Moderate: nss security, bug fix, and enhancement update

Type/Severity

Security Advisory Moderate

Topic

Updated nss packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications.

It was found that NSS permitted skipping of the ServerKeyExchange packet during a handshake involving ECDHE (Elliptic Curve Diffie-Hellman key Exchange). A remote attacker could use this flaw to bypass the forward-secrecy of a TLS/SSL connection. (CVE-2015-2721)

A flaw was found in the way NSS verified certain ECDSA (Elliptic Curve Digital Signature Algorithm) signatures. Under certain conditions, an attacker could use this flaw to conduct signature forgery attacks. (CVE-2015-2730)

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Karthikeyan Bhargavan as the original reporter of CVE-2015-2721, and Watson Ladd as the original reporter of CVE-2015-2730.

The nss packages have been upgraded to upstream version 3.19.1, which provides a number of bug fixes and enhancements over the previous version.

All nss users are advised to upgrade to these updated packages, which correct these issues.

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

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • nss-devel-3.19.1-1.el5_11.s390.rpm
  • nss-devel-3.19.1-1.el5_11.s390x.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.i386.rpm
  • nss-debuginfo-3.19.1-1.el5_11.i386.rpm
  • nss-3.19.1-1.el5_11.src.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.ppc.rpm
  • nss-3.19.1-1.el5_11.s390.rpm
  • nss-debuginfo-3.19.1-1.el5_11.ppc.rpm
  • nss-debuginfo-3.19.1-1.el5_11.x86_64.rpm
  • nss-3.19.1-1.el5_11.ppc64.rpm
  • nss-debuginfo-3.19.1-1.el5_11.ia64.rpm
  • nss-devel-3.19.1-1.el5_11.x86_64.rpm
  • nss-3.19.1-1.el5_11.i386.rpm
  • nss-tools-3.19.1-1.el5_11.ia64.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.s390.rpm
  • nss-devel-3.19.1-1.el5_11.i386.rpm
  • nss-devel-3.19.1-1.el5_11.ia64.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.ia64.rpm
  • nss-3.19.1-1.el5_11.ppc.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.ppc64.rpm
  • nss-tools-3.19.1-1.el5_11.s390x.rpm
  • nss-devel-3.19.1-1.el5_11.ppc64.rpm
  • nss-3.19.1-1.el5_11.x86_64.rpm
  • nss-tools-3.19.1-1.el5_11.ppc.rpm
  • nss-tools-3.19.1-1.el5_11.x86_64.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.x86_64.rpm
  • nss-3.19.1-1.el5_11.ia64.rpm
  • nss-pkcs11-devel-3.19.1-1.el5_11.s390x.rpm
  • nss-3.19.1-1.el5_11.s390x.rpm
  • nss-debuginfo-3.19.1-1.el5_11.s390.rpm
  • nss-debuginfo-3.19.1-1.el5_11.s390x.rpm
  • nss-debuginfo-3.19.1-1.el5_11.ppc64.rpm
  • nss-tools-3.19.1-1.el5_11.i386.rpm
  • nss-devel-3.19.1-1.el5_11.ppc.rpm

Fixes

CVEs

References

Additional information