Description
The OSPFv3 implementation in ospf6d in Quagga before 0.99.19 allows remote attackers to cause a denial of service (out-of-bounds memory access and daemon crash) via a Link State Update message with an invalid IPv6 prefix length.
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 6.0 | quagga | 0.99.17-2+squeeze3 | DSA-2316-1 |
| Debian 5.0 | quagga | 0.99.10-1lenny6 | DSA-2316-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | quagga +2 | 0.99.15-7.el6_3.2 | RHSA-2012:1259 |
| RHEL 5 | quagga +2 | 0.98.6-7.el5_8.1 | RHSA-2012:1258 |
Advisories 3
- RHSA-2012:1259 Red Hat Security Advisory: quagga security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2012:1258 Red Hat Security Advisory: quagga security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2316-1 quagga - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://code.quagga.net/?p=quagga.git%3Ba=commit%3Bh=abc7ef44ca05493500865ce81f7b84f5c4eb6594
- http://www.quagga.net/download/quagga-0.99.19.changelog.txt
- VU#668534 third-party-advisory
- DSA-2316 vendor-advisory
- RHSA-2012:1259 vendor-advisory
- https://www.cert.fi/en/reports/2011/vulnerability539178.html
- 46139 third-party-advisory
- SUSE-SU-2011:1075 vendor-advisory
- openSUSE-SU-2011:1155 vendor-advisory
- GLSA-201202-02 vendor-advisory
- RHSA-2012:1258 vendor-advisory
- SUSE-SU-2011:1316 vendor-advisory
- 46274 third-party-advisory
- 48106 third-party-advisory
- SUSE-SU-2011:1171 vendor-advisory