Description
mod_nss 1.0.8 and earlier, when NSSVerifyClient is set to none for the server/vhost context, does not enforce the NSSVerifyClient setting in the directory context, which allows remote attackers to bypass intended access restrictions.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libapache2-mod-nss | No fix yet | — |
| Ubuntu 16.04 LTS | libapache2-mod-nss | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | mod_nss | 1.0.8-19.el6_5 | RHSA-2013:1779 |
| RHEL 5 | mod_nss | 1.0.8-8.el5_10 | RHSA-2013:1779 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | apache2-mod_nss | 1.0.14-18.3 | SUSE-SU-2016:2285-1 |
| SLES 12 | apache2-mod_nss | 1.0.14-10.14.3 | SUSE-SU-2016:2396-1 |
| SLES 11 SP4 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SLES 11 SP3 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SLES 11 SP2 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | apache2-mod_nss | 1.0.14-18.3 | SUSE-SU-2016:2285-1 |
| SLES for SAP 12 | apache2-mod_nss | 1.0.14-10.14.3 | SUSE-SU-2016:2396-1 |
| SLES for SAP 11 SP4 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SUSE OpenStack Cloud 5 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SUSE Manager Proxy 2.1 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SUSE Manager 2.1 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | apache2-mod_nss | 1.0.14-0.4.25.1 | SUSE-SU-2016:2329-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | apache2-mod_nss | 1.0.14-4.1 | openSUSE-SU-2024:10311-1 |
Advisories 5
- RHSA-2013:1779 Red Hat Security Advisory: mod_nss security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SUSE-SU-2016:2329-1 Security update for apache2-mod_nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10311-1 apache2-mod_nss-1.0.14-4.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2396-1 Security update for apache2-mod_nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2285-1 Security update for apache2-mod_nss SUSE / openSUSE Security Updates · May 2, 2025
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1016832
- RHSA-2013:1779 vendor-advisory
- openSUSE-SU-2013:1956 vendor-advisory