Description
Use-after-free vulnerability in the PK11_ImportDERPrivateKeyInfoAndReturnKey function in Mozilla Network Security Services (NSS) before 3.21.1, as used in Mozilla Firefox before 45.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted key data with DER encoding.
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 | firefox-esr | 45.0esr-1 | — |
| Debian 14 | nss | 2:3.21-1 | — |
| Debian 13 | firefox-esr | 45.0esr-1 | — |
| Debian 13 | nss | 2:3.21-1 | — |
| Debian 12 | firefox-esr | 45.0esr-1 | — |
| Debian 12 | nss | 2:3.21-1 | — |
| Debian 8 | icedove | 38.8.0-1~deb8u1 | DSA-3576-1 |
| Debian 8 | nss | 2:3.26-1+debu8u1 | DSA-3688-1 |
| Debian 7 | icedove | 38.8.0-1~deb7u1 | DLA-472-1 |
| Debian 7 | nss | 2:3.14.5-1+deb7u6 | DLA-480-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | thunderbird | 1:38.8.0+build1-0ubuntu0.16.04.1 | USN-2973-1 |
| Ubuntu 14.04 LTS | firefox | 44.0.2+build1-0ubuntu0.14.04.1 | — |
| Ubuntu 14.04 LTS | thunderbird | 1:38.8.0+build1-0ubuntu0.14.04.1 | USN-2973-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nspr +1 | 4.11.0-1.el7_2 | RHSA-2016:0685 |
| RHEL 7 | nss +4 | 3.21.0-9.el7_2 | RHSA-2016:0685 |
| RHEL 7 | nss-softokn +3 | 3.16.2.3-14.2.el7_2 | RHSA-2016:0685 |
| RHEL 7 | nss-util +1 | 3.21.0-2.2.el7_2 | RHSA-2016:0685 |
| RHEL 6 | nspr +1 | 4.11.0-0.1.el6_7 | RHSA-2016:0591 |
| RHEL 6 | nss +6 | 3.21.0-0.3.el6_7 | RHSA-2016:0591 |
| RHEL 5 | nspr +1 | 4.11.0-1.el5_11 | RHSA-2016:0684 |
| RHEL 5 | nss +3 | 3.21.0-6.el5_11 | RHSA-2016:0684 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | MozillaFirefox | 38.7.0esr-63.3 | SUSE-SU-2016:0727-1 |
| SLES 12 SP1 | mozilla-nspr | 4.12-12.1 | SUSE-SU-2016:0727-1 |
| SLES 12 SP1 | mozilla-nss | 3.20.2-40.1 | SUSE-SU-2016:0727-1 |
| SLES 12 | MozillaFirefox | 38.7.0esr-63.3 | SUSE-SU-2016:0727-1 |
| SLES 12 | mozilla-nspr | 4.12-12.1 | SUSE-SU-2016:0727-1 |
| SLES 12 | mozilla-nss | 3.20.2-40.1 | SUSE-SU-2016:0727-1 |
| SLES 11 SP4 | MozillaFirefox | 38.7.0esr-37.3 | SUSE-SU-2016:0777-1 |
| SLES 11 SP4 | mozilla-nspr | 4.12-24.1 | SUSE-SU-2016:0777-1 |
| SLES 11 SP4 | mozilla-nss | 3.20.2-28.1 | SUSE-SU-2016:0777-1 |
| SLES 11 SP3 | MozillaFirefox | 38.7.0esr-37.3 | SUSE-SU-2016:0777-1 |
| SLES 11 SP3 | mozilla-nspr | 4.12-24.1 | SUSE-SU-2016:0777-1 |
| SLES 11 SP3 | mozilla-nss | 3.20.2-28.1 | SUSE-SU-2016:0777-1 |
| SLES 11 SP2 | MozillaFirefox | 38.7.0esr-36.3 | SUSE-SU-2016:0909-1 |
| SLES 11 SP2 | mozilla-nspr | 4.12-19.1 | SUSE-SU-2016:0909-1 |
| SLES 11 SP2 | mozilla-nss | 3.20.2-20.1 | SUSE-SU-2016:0909-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | MozillaFirefox | 38.7.0esr-63.3 | SUSE-SU-2016:0727-1 |
| SLES for SAP 12 SP1 | mozilla-nspr | 4.12-12.1 | SUSE-SU-2016:0727-1 |
| SLES for SAP 12 SP1 | mozilla-nss | 3.20.2-40.1 | SUSE-SU-2016:0727-1 |
| SLES for SAP 12 | MozillaFirefox | 38.7.0esr-63.3 | SUSE-SU-2016:0727-1 |
| SLES for SAP 12 | mozilla-nspr | 4.12-12.1 | SUSE-SU-2016:0727-1 |
| SLES for SAP 12 | mozilla-nss | 3.20.2-40.1 | SUSE-SU-2016:0727-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.7.0esr-37.3 | SUSE-SU-2016:0777-1 |
| SLES for SAP 11 SP4 | mozilla-nspr | 4.12-24.1 | SUSE-SU-2016:0777-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.20.2-28.1 | SUSE-SU-2016:0777-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Tumbleweed | mozilla-nss | 3.26.2-1.1 | openSUSE-SU-2024:10451-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nspr +1 | 4.11.0-1.el7_2 | ELSA-2016-0685 |
| Oracle Linux 7 | nss +4 | 3.21.0-9.0.1.el7_2 | ELSA-2016-0685 |
| Oracle Linux 7 | nss-softokn +3 | 3.16.2.3-14.2.el7_2 | ELSA-2016-0685 |
| Oracle Linux 7 | nss-util +1 | 3.21.0-2.2.el7_2 | ELSA-2016-0685 |
Advisories 16
- RHSA-2016:0685 Red Hat Security Advisory: nss, nspr, nss-softokn, and nss-util security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2016:0684 Red Hat Security Advisory: nss and nspr security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2016:0591 Red Hat Security Advisory: nss, nss-util, and nspr security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2973-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-472-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-480-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3576-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3688-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:0727-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10451-1 libfreebl3-3.26.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0909-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0777-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2016-0685 Moderate: nss, nspr, nss-softokn, and nss-util security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 25, 2016
References
- https://bto.bluecoat.com/security-advisory/sa124
- 84221 vdb-entry
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- DSA-3688 vendor-advisory
- DSA-3576 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1185033
- RHSA-2016:0684 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- SUSE-SU-2016:0820 vendor-advisory
- RHSA-2016:0685 vendor-advisory
- openSUSE-SU-2016:0731 vendor-advisory
- SUSE-SU-2016:0727 vendor-advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.1_release_notes
- http://www.mozilla.org/security/announce/2016/mfsa2016-36.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- USN-2973-1 vendor-advisory
- RHSA-2016:0591 vendor-advisory
- SUSE-SU-2016:0909 vendor-advisory
- openSUSE-SU-2016:0733 vendor-advisory
- 1035215 vdb-entry
- SUSE-SU-2016:0777 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- GLSA-201605-06 vendor-advisory