The bgp_attr_unknown function in bgp_attr.c in Quagga 0.99.21 does not properly…
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The bgp_attr_unknown function in bgp_attr.c in Quagga 0.99.21 does not properly initialize the total variable, which allows remote attackers to cause a denial of service (bgpd crash) via a crafted BGP update.
Why it matters now
EPSS 0.02245 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2013-6051
- 2026-10-03 Alias added: GHSA-v7c4-xhg8-w2fh
References
More Quagga vulnerabilities
- TI-2018-03911 Memory corruption in Quagga bgpd CVSS 3.0HIGH 7.1
- TI-2018-03912 Double free in Quagga bgpd CVSS 3.0CRITICAL 9.8
- TI-2017-11946 The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote… CVSS 3.0HIGH 7.5
- TI-2018-03914 Infinite loop in Quagga bgpd CVSS 3.0HIGH 7.5
- TI-2017-03515 All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory… CVSS 3.0HIGH 7.5
- TI-2016-02105 The bgp_nlri_parse_vpnv4 function in bgp_mplsvpn.c in the VPNv4 NLRI parser in bgpd in… CVSS 3.0HIGH 8.1
Sources
- CVE-2013-6051 · CVE Program
- CVE-2013-6051 · NVD
- FIRST EPSS
- GHSA-v7c4-xhg8-w2fh · GitHub Advisory Database · CC BY 4.0
- CVE-2013-6051 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences