CVE-2023-41910 — An issue was discovered in lldpd before 1
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.
Published
2023-09-05T00:00:00.000Z
Last modified
2024-09-30T17:18:00.941Z
01What is this vulnerability?
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-09-05T00:00:00.000Z
- Last modified: 2024-09-30T17:18:00.941Z
09References
- github.com — https://github.com/lldpd/lldpd/releases/tag/1.0.17
- github.com — https://github.com/lldpd/lldpd/commit/a9aeabdf879c25c584852a0bb5523837632f099b
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/09/msg00025.html
- www.debian.org — https://www.debian.org/security/2023/dsa-5505
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