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Fencer Intel
low 3.3

CVE-2012-0249 json

Buffer overflow in the ospf_ls_upd_list_lsa function in ospf_packet.c in the OSPFv2 implementation in ospfd in Quagga before 0.99.20.1 allo…

published 2012-04-05 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-0285

cvss
3.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

Buffer overflow in the ospf_ls_upd_list_lsa function in ospf_packet.c in the OSPFv2 implementation in ospfd in Quagga before 0.99.20.1 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a Link State Update (aka LS Update) packet that is smaller than the length specified in its header.

Patch / fix

  • quagga RHEL 6 0.99.15-7.el6_3.2
  • quagga-contrib RHEL 6 0.99.15-7.el6_3.2
  • quagga RHEL 5 0.98.6-7.el5_8.1
  • quagga-contrib RHEL 5 0.98.6-7.el5_8.1

red hat advisories RHSA-2012:1259RHSA-2012:1258

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-0249 updated cvss 2.9

(ospfd): Assertion failure due improper length check for a received LS-Update OSPF packet

  • Red Hat Enterprise Linux (v. 5 server) quagga 0.98.6-7.el5_8.1, quagga-contrib 0.98.6-7.el5_8.1 Red Hat Enterprise Linux Desktop (v. 5 client) quagga 0.98.6-7.el5_8.1, quagga-contrib 0.98.6-7.el5_8.1
    fixed: vendor fix RHSA-2012:1258
  • Red Hat Enterprise Linux Server (v. 6) quagga 0.99.15-7.el6_3.2, quagga-contrib 0.99.15-7.el6_3.2 Red Hat Enterprise Linux Server Optional (v. 6) quagga 0.99.15-7.el6_3.2, quagga-contrib 0.99.15-7.el6_3.2 Red Hat Enterprise Linux Workstation (v. 6) quagga 0.99.15-7.el6_3.2, quagga-contrib 0.99.15-7.el6_3.2 Red Hat Enterprise Linux Workstation Optional (v. 6) quagga 0.99.15-7.el6_3.2, quagga-contrib 0.99.15-7.el6_3.2
    fixed: vendor fix RHSA-2012:1259
  • Red Hat RHEL Desktop Workstation (v. 5 client) quagga 0.98.6-7.el5_8.1, quagga-contrib 0.98.6-7.el5_8.1
    fixed: vendor fix RHSA-2012:1258

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.80% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.quagga.net https://bugzilla.quagga.net/show_bug.cgi?id=705 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.