Vulnerability Report

CVE-2018-1000140

RCE

Title: Rsyslog Librelp RCE

RCE

Proof Of Concept

PoC Available for CVE-2018-1000140

CWE Category CWE-787
Published Date Mar 23, 2018
Modified Date Nov 21, 2024
Exploit Status Available
Score 9.8 CVSS v3.0
Exploit Probability (EPSS)
9.52%

Vulnerability Summary

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. 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.

Impacted Vendors

R
rsyslog 1

Reference Links

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 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
CVSS v3.0
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-1000140 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/s0/rsyslog-librelp-CVE-2018-1000140
View Code
GitHub https://github.com/s0/rsyslog-librelp-CVE-2018-1000140-fixed
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.