CVE-2023-41909 (GCVE-0-2023-41909)
Vulnerability from cvelistv5 – Published: 2023-09-05 00:00 – Updated: 2024-08-02 19:09
VLAI
EPSS
VEX
Summary
An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.
Severity
7.5 (High)
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/FRRouting/frr/pull/13222/commi… | |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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"cveId": "CVE-2023-41909",
"datePublished": "2023-09-05T00:00:00.000Z",
"dateReserved": "2023-09-05T00:00:00.000Z",
"dateUpdated": "2024-08-02T19:09:49.287Z",
"state": "PUBLISHED"
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"epss": {
"cve": "CVE-2023-41909",
"date": "2026-09-16",
"epss": "0.01119",
"percentile": "0.64507"
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"fkie_nvd": {
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"id": "CVE-2023-41909",
"lastModified": "2024-11-21T08:21:53.967",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}]}",
"published": "2023-09-05T07:15:14.877",
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T14:48:04+00:00",
"cve": "CVE-2023-41909",
"id": "CVE-2023-41909",
"initial_release_date": "2023-09-05T00:00:00+00:00",
"product_status:fixed": "28",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "frr: NULL pointer dereference in bgp_nlri_parse_flowspec() in bgpd/bgp_flowspec.c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-41909.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-09-01T01:19:23Z",
"cve": "CVE-2023-41909",
"id": "CVE-2023-41909",
"initial_release_date": "2023-09-07T02:34:11Z",
"product_status:known_not_affected": "347",
"product_status:recommended": "357",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-41909",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-41909.json",
"version": "28"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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