Description
The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nss | 2:3.14.3-1 | — |
| Debian 13 | nss | 2:3.14.3-1 | — |
| Debian 12 | nss | 2:3.14.3-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | nspr +1 | 4.9.5-2.el6_4 | RHSA-2013:1144 |
| RHEL 6 | nss +4 | 3.14.3-4.el6_4 | RHSA-2013:1144 |
| RHEL 6 | nss-util +5 | 3.14.3-3.el6_4 | RHSA-2013:1144 |
| RHEL 6 | rhev-hypervisor6 | 6.4-20130815.0.el6_4 | RHSA-2013:1181 |
| RHEL 5 | nspr +1 | 4.9.5-1.el5_9 | RHSA-2013:1135 |
| RHEL 5 | nss +3 | 3.14.3-6.el5_9 | RHSA-2013:1135 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mozilla-nss | 3.26.2-1.1 | openSUSE-SU-2024:10451-1 |
Advisories 4
- RHSA-2013:1181 Red Hat Security Advisory: rhev-hypervisor6 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2013:1144 Red Hat Security Advisory: nss, nss-util, nss-softokn, and nspr security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:1135 Red Hat Security Advisory: nss and nspr security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:10451-1 libfreebl3-3.26.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- 57777 vdb-entry
- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- http://www.isg.rhul.ac.uk/tls/TLStiming.pdf
- openSUSE-SU-2013:0630 vendor-advisory
- [oss-security] 20130205 Re: CVE request: TLS CBC padding timing flaw in various SSL / TLS implementations mailing-list
- 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities mailing-list
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- USN-1763-1 vendor-advisory
- GLSA-201406-19 vendor-advisory
- RHSA-2013:1135 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html
- http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
- RHSA-2013:1144 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities mailing-list
- openSUSE-SU-2013:0631 vendor-advisory
- 64758 vdb-entry
- http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html