Amazon Linux 2 Security Advisory: ALAS-2018-998
Advisory Release Date: 2018-04-19 05:10 Pacific
Advisory Updated Date: 2018-04-19 22:44 Pacific
Severity:
Critical
Issue Overview:
Stack-based buffer overflow in relpTcpChkPeerName function in src/tcp.c:
rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code execution. This attack appear to be exploitable a remote attacker that can connect to rsyslog and trigger a stack buffer overflow by sending a specially crafted x509 certificate. (CVE-2018-1000140)
Affected Packages:
librelp
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update librelp to update your system.
New Packages:
src:
librelp-1.2.12-1.amzn2.0.1.src
x86_64:
librelp-1.2.12-1.amzn2.0.1.x86_64
librelp-devel-1.2.12-1.amzn2.0.1.x86_64
librelp-debuginfo-1.2.12-1.amzn2.0.1.x86_64