CVE-2012-1820

The bgp_capability_orf function in bgpd in Quagga 0.99.20.1 and earlier allows remote attackers...

2.9 LowFix available

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.

Exploit likelihood

1.04%Down 0.3 points since Feb 4, 2022

What each source reports

NVD Score used 2.9

Record: CVE-2012-1820
CVSS 2.0: 2.9 LowAV:A/AC:M/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-1820
Updated: 2026-11-02

EUVDEUVD-2012-1830 No score

Record: EUVD-2012-1830
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mgpv-2w6f-2v7h No score

The bgp_capability_orf function in bgpd in Quagga 0.99.20.1 and earlier allows remote attackers...

Record: GHSA-mgpv-2w6f-2v7h
Updated: 2026-11-02

Affected products

quagga

Affected packages

Affected packages
Package	Affected	Fixed
`quagga` Debian:6.0	before 0.99.20.1-0+squeeze3, plus listed versions 0.99.17-20.99.17-2+squeeze20.99.17-2+squeeze30.99.17-30.99.17-4 Show 10 moreShow less 0.99.18-10.99.18-20.99.19-10.99.20-10.99.20-1~bpo60+10.99.20-20.99.20-30.99.20-40.99.20.1-0+squeeze10.99.20.1-0+squeeze2	0.99.20.1-0+squeeze3
`quagga` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-debuginfo` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-contrib` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-devel` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-debuginfo` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-contrib` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga-devel` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2012-1820 is a low vulnerability (CVSS 2.9) in Quagga, published June 13, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. Fixed in quagga 0.99.20.1-0+squeeze3.

References

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