Description
The bgp_capability_orf function in bgpd in Quagga 0.99.20.1 and earlier allows remote attackers to cause a denial of service (assertion failure and daemon exit) by leveraging a BGP peering relationship and sending a malformed Outbound Route Filtering (ORF) capability TLV in an OPEN message.
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+squeeze3 | DSA-2497-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | quagga +2 | 0.99.15-7.el6_3.2 | RHSA-2012:1259 |
Advisories 2
- RHSA-2012:1259 Red Hat Security Advisory: quagga security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2497-1 quagga - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- VU#962587 third-party-advisory
- RHSA-2012:1259 vendor-advisory
- USN-1605-1 vendor-advisory
- DSA-2497 vendor-advisory
- 53775 vdb-entry
- 50941 third-party-advisory