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
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.
- Published
- Oct 10, 2011
- Updated
- Jun 16, 2026
- EPSS
- 4.6% · 91th percentile
- CWE
- CWE-399
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| quagga | quagga | cpe:2.3:a:quagga:quagga |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- quagga quaggaup to 0.99.18 inclusive
- quagga quagga0.95
- quagga quagga0.96
- quagga quagga0.96.1
- quagga quagga0.96.2
- quagga quagga0.96.3
- quagga quagga0.96.4
- quagga quagga0.96.5
- quagga quagga0.97.0
- quagga quagga0.97.1
- quagga quagga0.97.2
- quagga quagga0.97.3
- quagga quagga0.97.4
- quagga quagga0.97.5
- quagga quagga0.98.0
- quagga quagga0.98.1
- quagga quagga0.98.2
- quagga quagga0.98.3
- quagga quagga0.98.4
- quagga quagga0.98.5
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:5.0 | quagga | before 0.99.10-1lenny6 | 0.99.10-1lenny6 |
| Debian:6.0 | quagga | before 0.99.17-2+squeeze3 | 0.99.17-2+squeeze3 |
| Red Hat:enterprise_linux:5::client | quagga | before 0:0.98.6-7.el5_8.1 | 0:0.98.6-7.el5_8.1 |
| Red Hat:enterprise_linux:5::client | quagga-contrib | before 0:0.98.6-7.el5_8.1 | 0:0.98.6-7.el5_8.1 |
| Red Hat:enterprise_linux:5::client | quagga-debuginfo | before 0:0.98.6-7.el5_8.1 | 0:0.98.6-7.el5_8.1 |
| Red Hat:enterprise_linux:5::client_workstation | quagga-devel | before 0:0.98.6-7.el5_8.1 | 0:0.98.6-7.el5_8.1 |
| Red Hat:enterprise_linux:6::server | quagga | before 0:0.99.15-7.el6_3.2 | 0:0.99.15-7.el6_3.2 |
| Red Hat:enterprise_linux:6::server | quagga-contrib | before 0:0.99.15-7.el6_3.2 | 0:0.99.15-7.el6_3.2 |
| Red Hat:enterprise_linux:6::server | quagga-debuginfo | before 0:0.99.15-7.el6_3.2 | 0:0.99.15-7.el6_3.2 |
| Red Hat:enterprise_linux:6::server | quagga-devel | before 0:0.99.15-7.el6_3.2 | 0:0.99.15-7.el6_3.2 |
Same product
quagga: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-5379The Quagga BGP daemon (bgpd) prior to version 1.2.3 can double-free memory when processing certain forms of UPDATE message, containing clust51Plan
- CVE-2018-5378The Quagga BGP daemon (bgpd) prior to version 1.2.3 does not properly bounds check the data sent with a NOTIFY to a peer, if an attribute le45Plan
- CVE-2016-1245It was discovered that the zebra daemon in Quagga before 1.0.20161017 suffered from a stack-based buffer overflow when processing IPv6 Neigh40Plan
- CVE-2018-5381The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp39Monitor
- CVE-2017-16227The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via 36Monitor
- CVE-2017-5495All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:quagga | 0.99.10-1lenny6 · Debian:5.0 | Package registry (OSV) |
| red hat:quagga | 0:0.98.6-7.el5_8.1 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:quagga-contrib | 0:0.98.6-7.el5_8.1 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:quagga-debuginfo | 0:0.98.6-7.el5_8.1 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:quagga-devel | 0:0.98.6-7.el5_8.1 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- code.quagga.net/?p=quagga.git%3Ba=commit%3Bh=6b161fc12a15aba8824c84d1eb38e529aaf70769
- lists.opensuse.org/opensuse-security-announce/2011-09/msg00027.html
- lists.opensuse.org/opensuse-security-announce/2011-10/msg00007.html
- lists.opensuse.org/opensuse-security-announce/2011-10/msg00010.html
- lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html
- rhn.redhat.com/errata/RHSA-2012-1258.html
- rhn.redhat.com/errata/RHSA-2012-1259.html
- secunia.com/advisories/46139
- secunia.com/advisories/46274
- secunia.com/advisories/48106
- security.gentoo.org/glsa/glsa-201202-02.xml
- www.debian.org/security/2011/dsa-2316
- www.kb.cert.org/vuls/id/668534
- www.quagga.net/download/quagga-0.99.19.changelog.txt
- www.cert.fi/en/reports/2011/vulnerability539178.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.