7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.9 High
AI Score
Confidence
High
0.39 Low
EPSS
Percentile
97.3%
Issue Overview:
Stack-based buffer overflow in relpTcpChkPeerName function in src/tcp.c:
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. (CVE-2018-1000140)
Affected Packages:
librelp
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update librelp to update your system.
New Packages:
src:
librelp-1.2.12-1.amzn2.0.1.src
x86_64:
librelp-1.2.12-1.amzn2.0.1.x86_64
librelp-devel-1.2.12-1.amzn2.0.1.x86_64
librelp-debuginfo-1.2.12-1.amzn2.0.1.x86_64
Red Hat: CVE-2018-1000140
Mitre: CVE-2018-1000140
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | x86_64 | librelp | < 1.2.12-1.amzn2.0.1 | librelp-1.2.12-1.amzn2.0.1.x86_64.rpm |
Amazon Linux | 2 | x86_64 | librelp-devel | < 1.2.12-1.amzn2.0.1 | librelp-devel-1.2.12-1.amzn2.0.1.x86_64.rpm |
Amazon Linux | 2 | x86_64 | librelp-debuginfo | < 1.2.12-1.amzn2.0.1 | librelp-debuginfo-1.2.12-1.amzn2.0.1.x86_64.rpm |
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.9 High
AI Score
Confidence
High
0.39 Low
EPSS
Percentile
97.3%