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    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.

    Published:Mar 23, 2018
    Last Modified:Nov 21, 2024
    EPS:Mar 23, 2018
    EPSS Score:0.43633
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Rsyslog
    Product
    Librelp

    Exploits

    https://lgtm.com/rules/1505913226124/https://lgtm.com/rules/1505913226124/https://github.com/s0/rsyslog-librelp-CVE-2018-1000140https://github.com/s0/rsyslog-librelp-CVE-2018-1000140-fixed

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
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    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High