CVE-2018-1000140
9.8
CRITICAL · CVSS 3.0 · EPSS 9.3% (pctl 95)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 9.34% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-03-23 |
| Last modified | 2026-06-17 |
Affected (9)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian 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 |
| rsyslog | librelp |
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/
- https://www.debian.org/security/2018/dsa-4151
- 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
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