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CVE
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CVE-2018-1000140Date: (C)2018-04-09   (M)2023-12-22


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 Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 9.8CVSS Score : 7.5
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 5.9Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: HIGH 
  
Reference:
DSA-4151
GLSA-201804-21
RHSA-2018:1223
RHSA-2018:1225
RHSA-2018:1701
RHSA-2018:1702
RHSA-2018:1703
RHSA-2018:1704
RHSA-2018:1707
USN-3612-1
http://packetstormsecurity.com/files/172829/librelp-Remote-Code-Execution.html
https://github.com/rsyslog/librelp/blob/532aa362f0f7a8d037505b0a27a1df452f9bac9e/src/tcp.c#L1205
https://lgtm.com/rules/1505913226124/

CWE    1
CWE-787
OVAL    17
oval:org.secpod.oval:def:89002354
oval:org.secpod.oval:def:89002369
oval:org.secpod.oval:def:204816
oval:org.secpod.oval:def:204777
...

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