What’s Vulnerable › Vulnerabilities
CVE-2018-1000140
- Severity: critical (CVSS 9.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 9.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2018-03-23 · updated 2026-06-17
- Weakness: CWE-787
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.
Affected products
- Canonical Ubuntu Linux: 14.04
- Debian Linux: 8.0, 9.0
- RedHat Enterprise Linux Desktop: 6.0, 7.0
- RedHat Enterprise Linux Server: 6.0, 7.0
- RedHat Enterprise Linux Server Aus: 6.6, 7.2, 7.3, 7.4, 7.6
- RedHat Enterprise Linux Server Eus: 6.7, 7.3, 7.4, 7.5, 7.6
- RedHat Enterprise Linux Server Tus: 6.6, 7.2, 7.3, 7.4, 7.6
- RedHat Enterprise Linux Workstation: 6.0, 7.0
- rsyslog Librelp: through 1.2.14
References
- http://packetstormsecurity.com/files/172829/librelp-Remote-Code-Execution.html
- 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/
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