CVE-2018-1000140
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.34% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- rsyslog/librelp · debian/debian linux · canonical/ubuntu linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.