Description

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.

References

https://access.redhat.com/errata/RHSA-2018:1223

https://access.redhat.com/errata/RHSA-2018:1225

https://access.redhat.com/errata/RHSA-2018:1701

https://access.redhat.com/errata/RHSA-2018:1702

https://access.redhat.com/errata/RHSA-2018:1703

https://access.redhat.com/errata/RHSA-2018:1704

https://access.redhat.com/errata/RHSA-2018:1707

https://github.com/rsyslog/librelp/blob/532aa362f0f7a8d037505b0a27a1df452f9bac9e/src/tcp.c#L1205

https://lgtm.com/rules/1505913226124/

https://security.gentoo.org/glsa/201804-21

https://usn.ubuntu.com/3612-1/

https://www.debian.org/security/2018/dsa-4151

Details

Risk Information

CVSS v2

CVSS v3