Vulnerability Monitor

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CVE-2011-3327

Heap-based buffer overflow in the ecommunity_ecom2str function in bgp_ecommunity.c in bgpd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by sending a crafted BGP UPDATE message over IPv4.

Security Impact Summary

CVE-2011-3327 is a security vulnerability that . Impacting 1 product from quagga organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-10-10T10:55:06.690

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	quagga	quagga	≤ 0.99.18	Yes
Application	quagga	quagga	0.95	Yes
Application	quagga	quagga	0.96	Yes
Application	quagga	quagga	0.96.1	Yes
Application	quagga	quagga	0.96.2	Yes
Application	quagga	quagga	0.96.3	Yes
Application	quagga	quagga	0.96.4	Yes
Application	quagga	quagga	0.96.5	Yes
Application	quagga	quagga	0.97.0	Yes
Application	quagga	quagga	0.97.1	Yes
Application	quagga	quagga	0.97.2	Yes
Application	quagga	quagga	0.97.3	Yes
Application	quagga	quagga	0.97.4	Yes
Application	quagga	quagga	0.97.5	Yes
Application	quagga	quagga	0.98.0	Yes
Application	quagga	quagga	0.98.1	Yes
Application	quagga	quagga	0.98.2	Yes
Application	quagga	quagga	0.98.3	Yes
Application	quagga	quagga	0.98.4	Yes
Application	quagga	quagga	0.98.5	Yes
Application	quagga	quagga	0.98.6	Yes
Application	quagga	quagga	0.99.1	Yes
Application	quagga	quagga	0.99.2	Yes
Application	quagga	quagga	0.99.3	Yes
Application	quagga	quagga	0.99.4	Yes
Application	quagga	quagga	0.99.5	Yes
Application	quagga	quagga	0.99.6	Yes
Application	quagga	quagga	0.99.7	Yes
Application	quagga	quagga	0.99.8	Yes
Application	quagga	quagga	0.99.9	Yes
Application	quagga	quagga	0.99.10	Yes
Application	quagga	quagga	0.99.11	Yes
Application	quagga	quagga	0.99.12	Yes
Application	quagga	quagga	0.99.13	Yes
Application	quagga	quagga	0.99.14	Yes
Application	quagga	quagga	0.99.15	Yes
Application	quagga	quagga	0.99.16	Yes
Application	quagga	quagga	0.99.17	Yes

References

http://code.quagga.net/?p=quagga.git%3Ba=commit%3Bh=94431dbc753171b48b5c6806af97fd690813b00a ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00027.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00007.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00010.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-1258.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-1259.html ([email protected])
http://secunia.com/advisories/46139 Vendor Advisory ([email protected])
http://secunia.com/advisories/46274 ([email protected])
http://secunia.com/advisories/48106 ([email protected])
http://security.gentoo.org/glsa/glsa-201202-02.xml ([email protected])
http://www.debian.org/security/2011/dsa-2316 ([email protected])
http://www.kb.cert.org/vuls/id/668534 US Government Resource ([email protected])
http://www.quagga.net/download/quagga-0.99.19.changelog.txt ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=738400 ([email protected])
https://www.cert.fi/en/reports/2011/vulnerability539178.html ([email protected])
http://code.quagga.net/?p=quagga.git%3Ba=commit%3Bh=94431dbc753171b48b5c6806af97fd690813b00a (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2011-09/msg00027.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00007.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00010.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-1258.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-1259.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/46139 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/46274 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/48106 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201202-02.xml (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2011/dsa-2316 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/668534 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.quagga.net/download/quagga-0.99.19.changelog.txt (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=738400 (af854a3a-2127-422b-91ae-364da2661108)
https://www.cert.fi/en/reports/2011/vulnerability539178.html (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For quagga's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.