CVE-2011-3326

The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers...

5.0 MediumFix available

The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) via an invalid Link State Advertisement (LSA) type in an IPv4 Link State Update message.

Exploit likelihood

4.63%Up 0.8 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2011-3326
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-3326
Updated: 2026-11-02

EUVDEUVD-2011-3290 No score

Record: EUVD-2011-3290
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xrjp-rhjh-9hxf No score

The ospf_flood function in ospf_flood.c in ospfd in Quagga before 0.99.19 allows remote attackers...

Record: GHSA-xrjp-rhjh-9hxf
Updated: 2026-11-02

Affected products

quagga

Affected packages

Affected packages
Package	Affected	Fixed
`quagga` Debian:5.0	before 0.99.10-1lenny6, plus listed versions 0.99.10-1lenny10.99.10-1lenny20.99.10-1lenny30.99.10-1lenny5	0.99.10-1lenny6
`quagga` Debian:6.0	before 0.99.17-2+squeeze3, plus listed versions 0.99.17-20.99.17-2+squeeze2	0.99.17-2+squeeze3
`quagga` Red Hat:enterprise_linux:5::client	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-contrib` Red Hat:enterprise_linux:5::client	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-debuginfo` Red Hat:enterprise_linux:5::client	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga` Red Hat:enterprise_linux:5::client_workstation	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-debuginfo` Red Hat:enterprise_linux:5::client_workstation	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-devel` Red Hat:enterprise_linux:5::client_workstation	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga` Red Hat:enterprise_linux:5::server	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-contrib` Red Hat:enterprise_linux:5::server	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1

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Affected packages
Package	Affected	Fixed
`quagga-debuginfo` Red Hat:enterprise_linux:5::server	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga-devel` Red Hat:enterprise_linux:5::server	before 0:0.98.6-7.el5_8.1	0:0.98.6-7.el5_8.1
`quagga` Red Hat:enterprise_linux:6::server	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	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	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	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2
`quagga` Red Hat:enterprise_linux:6::workstation	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	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	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	before 0:0.99.15-7.el6_3.2	0:0.99.15-7.el6_3.2

History

History
Recorded	Changed	Sources
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-2011-3326 is a medium vulnerability (CVSS 5.0) in Quagga, published October 5, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.63%, the 91st percentile. Fixed in quagga 0.99.10-1lenny6.

References

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