Description
Buffer overflow in the OSPFv2 implementation in ospfd in Quagga before 0.99.20.1 allows remote attackers to cause a denial of service (daemon crash) via a Link State Update (aka LS Update) packet containing a network-LSA link-state advertisement for which the data-structure length is smaller than the value in the Length header field.
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 | 0.99.20.1-0+squeeze1 | DSA-2459-1 |
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 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | quagga | No fix yet | — |
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-2459-1 quagga - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2012:1259 vendor-advisory
- FEDORA-2012-5411 vendor-advisory
- DSA-2459 vendor-advisory
- VU#551715 third-party-advisory
- 48949 third-party-advisory
- RHSA-2012:1258 vendor-advisory
- FEDORA-2012-5436 vendor-advisory
- FEDORA-2012-5352 vendor-advisory