CVE-2018-1000140

Name: CVE-2018-1000140
Creator: NVD / NIST
Published: 2018-03-23T21:29:00.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 9.66%

Last modified Jun 17, 2026

CVE-2018-1000140 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 9.66% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

9.66%

94.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Rsyslog	Librelp	<= 1.2.14
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	6.6
Redhat	Enterprise Linux Server Aus	7.2
Redhat	Enterprise Linux Server Aus	7.3
Redhat	Enterprise Linux Server Aus	7.4
Redhat	Enterprise Linux Server Aus	7.6
Redhat	Enterprise Linux Server Eus	6.7
Redhat	Enterprise Linux Server Eus	7.3
Redhat	Enterprise Linux Server Eus	7.4
Redhat	Enterprise Linux Server Eus	7.5
Redhat	Enterprise Linux Server Eus	7.6
Redhat	Enterprise Linux Server Tus	6.6
Redhat	Enterprise Linux Server Tus	7.2
Redhat	Enterprise Linux Server Tus	7.3
Redhat	Enterprise Linux Server Tus	7.4
Redhat	Enterprise Linux Server Tus	7.6
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0

References

http://packetstormsecurity.com/files/172829/librelp-Remote-Code-Execution.html
https://access.redhat.com/errata/RHSA-2018:1223Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1225Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1701Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1702Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1703Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1704Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1707Third Party Advisory
https://github.com/rsyslog/librelp/blob/532aa362f0f7a8d037505b0a27a1df452f9bac9e/src/tcp.c#L1205Patch, Third Party Advisory
https://lgtm.com/rules/1505913226124/Exploit, Third Party Advisory
https://security.gentoo.org/glsa/201804-21Third Party Advisory
https://usn.ubuntu.com/3612-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4151Third Party Advisory
http://packetstormsecurity.com/files/172829/librelp-Remote-Code-Execution.html
https://access.redhat.com/errata/RHSA-2018:1223Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1225Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1701Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1702Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1703Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1704Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1707Third Party Advisory
https://github.com/rsyslog/librelp/blob/532aa362f0f7a8d037505b0a27a1df452f9bac9e/src/tcp.c#L1205Patch, Third Party Advisory
https://lgtm.com/rules/1505913226124/Exploit, Third Party Advisory
https://security.gentoo.org/glsa/201804-21Third Party Advisory
https://usn.ubuntu.com/3612-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4151Third Party Advisory

Timeline

Published: Mar 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000140?

How severe is CVE-2018-1000140?

Severity scoring for CVE-2018-1000140 is pending analysis. The EPSS model estimates a 9.66% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000140?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1000140?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST