lldpd up to 1.0.12 SONMP Packet Decoder sonmp_decode out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in lldpd up to 1.0.12. This affects the function sonmp_decode of the component SONMP Packet Decoder. The manipulation results in out-of-bounds. This vulnerability is known as CVE-2021-43612. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in lldpd up to 1.0.12. It has been classified as problematic. Affected is the function sonmp_decode of the component SONMP Packet Decoder. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. CVE summarizes:

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

The weakness was published 04/16/2023 as 73d42680fce8598324364dbb31b9bc3b8320adf7. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-43612 since 11/12/2021. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 232903 (RockyLinux 9 : lldpd (RLSA-2024:9158)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.0.13 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 73d42680fce8598324364dbb31b9bc3b8320adf7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (232903). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 232903
Nessus Name: RockyLinux 9 : lldpd (RLSA-2024:9158)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: lldpd 1.0.13
Patch: 73d42680fce8598324364dbb31b9bc3b8320adf7

Timelineinfo

11/12/2021 🔍
04/16/2023 +519 days 🔍
04/16/2023 +0 days 🔍
03/20/2025 +704 days 🔍

Sourcesinfo

Product: github.com

Advisory: 73d42680fce8598324364dbb31b9bc3b8320adf7
Status: Confirmed

CVE: CVE-2021-43612 (🔍)
GCVE (CVE): GCVE-0-2021-43612
GCVE (VulDB): GCVE-100-226140

Entryinfo

Created: 04/16/2023 08:00
Updated: 03/20/2025 02:19
Changes: 04/16/2023 08:00 (44), 02/06/2025 18:53 (26), 03/20/2025 02:19 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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