quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal
Priority LOW 32CWE-617Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-617.
Summary
quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal
Why it matters now
EPSS 0.01494 74th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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 |
|---|---|---|---|---|---|
| Quagga | quagga | 0.99.21 | — | No fix listed | CNA |
- quagga VendorQuagga Affected 0.99.21 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:quagga:quagga:0.99.21:*:*:*:*:*:*:* | 0.99.21 | Vulnerable | Quagga |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
- cpe:2.3:a:quagga:quagga:0.99.21:*:*:*:*:*:*:* Versions 0.99.21 Vulnerable ·Quagga
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2012-5521
- 2026-10-03 Alias added: GHSA-r8m3-p659-7pmw
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-2012-5521 · CVE Program
- CVE-2012-5521 · NVD
- FIRST EPSS
- GHSA-r8m3-p659-7pmw · GitHub Advisory Database · CC BY 4.0
- CVE-2012-5521 · 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