Description
Heap-based buffer overflow in the ASN.1 decoder in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x before 3.20.1, as used in Firefox before 42.0 and Firefox ESR 38.x before 38.4 and other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted OCTET STRING data.
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 | 2:3.20.1-1 | — |
| Debian 13 | nss | 2:3.20.1-1 | — |
| Debian 12 | nss | 2:3.20.1-1 | — |
| Debian 8 | icedove | 38.4.0-1~deb8u1 | DSA-3410-1 |
| Debian 8 | iceweasel | 38.4.0esr-1~deb8u1 | DSA-3393-1 |
| Debian 8 | nss | 2:3.26-1+debu8u1 | DSA-3688-1 |
| Debian 7 | icedove | 38.4.0-1~deb7u1 | DSA-3410-1 |
| Debian 7 | iceweasel | 38.4.0esr-1~deb7u1 | DSA-3393-1 |
| Debian 7 | nss | 2:3.14.5-1+deb7u6 | DLA-480-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | nss | 3.12.8-1+squeeze13 | DLA-354-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 42.0+build2-0ubuntu0.14.04.1 | USN-2785-1 |
| Ubuntu 14.04 LTS | nss | 2:3.19.2.1-0ubuntu0.14.04.1 | USN-2791-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:38.4.0+build3-0ubuntu0.14.04.1 | USN-2819-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nspr +1 | 4.10.8-2.ael7b_1 | RHSA-2015:1981 |
| RHEL 7 | nss +4 | 3.19.1-7.ael7b_1.2 | RHSA-2015:1981 |
| RHEL 7 | nss-util +1 | 3.19.1-4.ael7b_1 | RHSA-2015:1981 |
| RHEL 6 | nspr +1 | 4.10.8-2.el6_7 | RHSA-2015:1981 |
| RHEL 6 | nss +4 | 3.19.1-5.el6_7 | RHSA-2015:1981 |
| RHEL 6 | nss-util +1 | 3.19.1-2.el6_7 | RHSA-2015:1981 |
| RHEL 5 | nspr +1 | 4.10.8-2.el5_11 | RHSA-2015:1980 |
| RHEL 5 | nss +3 | 3.19.1-2.el5_11 | RHSA-2015:1980 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | nspr +1 | 4.8.9-6.el6_2 | RHSA-2015:2068 |
| Red Hat Rhel Mission Critical 6 | nss +4 | 3.13.1-12.el6_2 | RHSA-2015:2068 |
| Red Hat Rhel Mission Critical 6 | nss-util +1 | 3.13.1-9.el6_2 | RHSA-2015:2068 |
| RHEL 6.6 EUS | nspr +1 | 4.10.8-2.el6_6 | RHSA-2015:2068 |
| RHEL 6.6 EUS | nss +4 | 3.19.1-4.el6_6 | RHSA-2015:2068 |
| RHEL 6.6 EUS | nss-util +1 | 3.19.1-2.el6_6 | RHSA-2015:2068 |
| RHEL 6.5 EUS | nspr +1 | 4.10.6-2.el6_5 | RHSA-2015:2068 |
| RHEL 6.5 EUS | nss +4 | 3.16.1-9.el6_5 | RHSA-2015:2068 |
| RHEL 6.5 EUS | nss-util +1 | 3.16.1-3.el6_5 | RHSA-2015:2068 |
| RHEL 6.4 AUS | nspr +1 | 4.9.5-5.el6_4 | RHSA-2015:2068 |
| RHEL 6.4 AUS | nss +4 | 3.14.3-9.el6_4 | RHSA-2015:2068 |
| RHEL 6.4 AUS | nss-util +1 | 3.14.3-7.el6_4 | RHSA-2015:2068 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 38.4.0esr-51.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | MozillaFirefox-branding-SLE | 31.0-17.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | mozilla-nspr | 4.10.10-9.1 | SUSE-SU-2015:1926-1 |
| SLES 12 | mozilla-nss | 3.19.2.1-29.1 | SUSE-SU-2015:1926-1 |
| SLES 11 SP4 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES 11 SP4 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES 11 SP3 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES 11 SP2 | MozillaFirefox | 38.4.0esr-25.3 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | MozillaFirefox-branding-SLED | 38-12.19 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1978-1 |
| SLES 11 SP2 | mozilla-nss | 3.19.2.1-12.1 | SUSE-SU-2015:1978-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 38.4.0esr-51.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | MozillaFirefox-branding-SLE | 31.0-17.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | mozilla-nspr | 4.10.10-9.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 12 | mozilla-nss | 3.19.2.1-29.1 | SUSE-SU-2015:1926-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 38.4.0esr-25.6 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | MozillaFirefox-branding-SLED | 38-15.31 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | mozilla-nspr | 4.10.10-16.1 | SUSE-SU-2015:1981-1 |
| SLES for SAP 11 SP3 | mozilla-nss | 3.19.2.1-19.3 | SUSE-SU-2015:1981-1 |
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 | mozilla-nss | 3.26.2-1.1 | openSUSE-SU-2024:10451-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nspr +1 | 4.10.8-2.el7_1 | ELSA-2015-1981 |
| Oracle Linux 7 | nss +4 | 3.19.1-7.0.1.el7_1.2 | ELSA-2015-1981 |
| Oracle Linux 7 | nss-util +1 | 3.19.1-4.el7_1 | ELSA-2015-1981 |
Advisories 18
- RHSA-2015:2068 Red Hat Security Advisory: nss, nss-util, and nspr security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2015:1980 Red Hat Security Advisory: nss and nspr security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2015:1981 Red Hat Security Advisory: nss, nss-util, and nspr security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2819-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2785-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2791-1 nss vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-480-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3688-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-354-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3410-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3393-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1981-1 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-2015:1978-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1926-1 Security update for MozillaFirefox, mozilla-nspr, mozilla-nss 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-2015-1981 Critical: nss, nss-util, and nspr security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 4, 2015
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- 1034069 vdb-entry
- https://bto.bluecoat.com/security-advisory/sa119
- DSA-3688 vendor-advisory
- DSA-3410 vendor-advisory
- SUSE-SU-2015:2081 vendor-advisory
- GLSA-201512-10 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- SUSE-SU-2015:1981 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1202868
- openSUSE-SU-2015:2229 vendor-advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.20.1_release_notes
- USN-2785-1 vendor-advisory
- USN-2791-1 vendor-advisory
- SUSE-SU-2015:1926 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- RHSA-2015:1981 vendor-advisory
- USN-2819-1 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- 91787 vdb-entry
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.4_release_notes
- openSUSE-SU-2015:1942 vendor-advisory
- RHSA-2015:1980 vendor-advisory
- DSA-3393 vendor-advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.2.1_release_notes
- http://packetstormsecurity.com/files/134268/Slackware-Security-Advisory-mozilla-nss-Updates.html
- 77416 vdb-entry
- openSUSE-SU-2015:2245 vendor-advisory
- GLSA-201605-06 vendor-advisory
- SSA:2015-310-02 vendor-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-133.html
- SUSE-SU-2015:1978 vendor-advisory