SB20230818221 - Fedora 38 update for lldpd

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Main Vulnerability Database SB20230818221

SB20230818221 - Fedora 38 update for lldpd

Published: August 18, 2023

Security Bulletin ID SB20230818221
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Memory leak (CVE-ID: CVE-2020-27827)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in lldpd when processing packets with multiple instances of certain TLVs. A remote attacker can send specially crafted traffic to the system and perform a denial of service (DoS) attack.


2) Heap-based buffer overflow (CVE-ID: CVE-2021-43612)

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when reading SONMP packets. A remote user can send specially crafted packets to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References