Description
A Null pointer dereference vulnerability exists in Mozilla Network Security Services due to a missing NULL check in PK11_SignWithSymKey / ssl3_ComputeRecordMACConstantTime, which could let a remote malicious user cause a Denial of Service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Network Security Services | 3.24 | — |
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 | 2:3.25-1 | — |
| Debian 13 | nss | 2:3.25-1 | — |
| Debian 12 | nss | 2:3.25-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | nss | 2:3.26.2-0ubuntu0.16.04.2 | USN-3163-1 |
| Ubuntu 14.04 LTS | nss | 2:3.26.2-0ubuntu0.14.04.3 | USN-3163-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nss +4 | 3.21.3-2.el7_3 | RHSA-2016:2779 |
| RHEL 7 | nss-util +1 | 3.21.3-1.1.el7_3 | RHSA-2016:2779 |
| RHEL 6 | nss +4 | 3.21.3-2.el6_8 | RHSA-2016:2779 |
| RHEL 6 | nss-util +1 | 3.21.3-1.el6_8 | RHSA-2016:2779 |
| RHEL 5 | nss +3 | 3.21.3-2.el5_11 | RHSA-2016:2779 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES 12 SP2 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES 12 SP1 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES 12 SP1 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES 12 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES 12 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES 11 SP4 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SLES 11 SP4 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
| SLES 11 SP3 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SLES 11 SP3 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP2 | MozillaFirefox | 45.5.1esr-63.1 | SUSE-SU-2016:3105-1 |
| SLES 11 SP2 | mozilla-nss | 3.21.3-30.1 | SUSE-SU-2016:3105-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 12 SP2 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 12 SP1 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 12 | MozillaFirefox | 45.5.0esr-88.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 12 | mozilla-nss | 3.21.3-50.1 | SUSE-SU-2016:3014-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
| SUSE OpenStack Cloud 5 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SUSE OpenStack Cloud 5 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
| SUSE Manager Proxy 2.1 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SUSE Manager Proxy 2.1 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
| SUSE Manager 2.1 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SUSE Manager 2.1 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 45.5.1esr-59.1 | SUSE-SU-2016:3080-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | mozilla-nss | 3.21.3-39.1 | SUSE-SU-2016:3080-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nss +4 | 3.21.3-2.0.1.el7_3 | ELSA-2016-2779 |
| Oracle Linux 7 | nss-util +1 | 3.21.3-1.1.el7_3 | ELSA-2016-2779 |
Advisories 6
- RHSA-2016:2779 Red Hat Security Advisory: nss and nss-util security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3163-1 nss vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2016:3014-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3080-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3105-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2016-2779 Moderate: nss and nss-util security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 16, 2016
References
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00049.html
- http://www.securityfocus.com/bid/94349
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00011.html
- https://security.gentoo.org/glsa/201701-46
- http://rhn.redhat.com/errata/RHSA-2016-2779.html
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00037.html
- http://www.ubuntu.com/usn/USN-3163-1
- https://bto.bluecoat.com/security-advisory/sa137
- https://bugzilla.mozilla.org/show_bug.cgi?id=1306103