Description
The ASN.1 decoder in the QuickDER decoder in Mozilla Network Security Services (NSS) before 3.13.4, as used in Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10, allows remote attackers to cause a denial of service (application crash) via a zero-length item, as demonstrated by (1) a zero-length basic constraint or (2) a zero-length field in an OCSP response.
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 | 3.13.4-1 | — |
| Debian 13 | nss | 3.13.4-1 | — |
| Debian 12 | nss | 3.13.4-1 | — |
| Debian 6.0 | nss | 3.12.8-1+squeeze5 | DSA-2490-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | nspr +1 | 4.9.1-2.el6_3 | RHSA-2012:1091 |
| RHEL 6 | nss +6 | 3.13.5-1.el6_3 | RHSA-2012:1091 |
| RHEL 5 | nspr +1 | 4.9.1-4.el5_8 | RHSA-2012:1090 |
| RHEL 5 | nss +3 | 3.13.5-4.el5_8 | RHSA-2012:1090 |
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 |
Advisories 6
- RHSA-2012:1090 Red Hat Security Advisory: nss and nspr security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1091 Red Hat Security Advisory: nss, nspr, and nss-util security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2490-1 nss - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media 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
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.mozilla.org/security/announce/2012/mfsa2012-39.html
- 49976 third-party-advisory
- USN-1540-2 vendor-advisory
- MDVSA-2012:088 vendor-advisory
- oval:org.mitre.oval:def:16701 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=715073
- 53798 vdb-entry
- DSA-2490 vendor-advisory
- SUSE-SU-2012:0746 vendor-advisory
- openSUSE-SU-2012:0760 vendor-advisory
- 50316 third-party-advisory
- USN-1540-1 vendor-advisory