CVE-2018-16881

mediumpriority · track · 31EPSS 0.022 · 83 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
2.24% (83rd) EPSS
CVSS 5 · medium
Is it mine?
32 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedrsyslog-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-0:8.24.0-41.el7_7.src as a component of RHV-M 4.3redhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-0:8.24.0-41.el7_7.src as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-debuginfo-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-debuginfo-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-elasticsearch-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-elasticsearch-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-elasticsearch-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-mmjsonparse-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-mmnormalize-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-mmnormalize-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Fixedrsyslog-mmnormalize-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891

    https://access.redhat.com/errata/RHBA-2019:2501
  • Workaroundrsyslog-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-0:8.24.0-41.el7_7.src as a component of RHV-M 4.3redhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-0:8.24.0-41.el7_7.src as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-debuginfo-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-debuginfo-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-elasticsearch-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-elasticsearch-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-elasticsearch-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-mmjsonparse-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-mmnormalize-0:8.24.0-41.el7_7.ppc64le as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-mmnormalize-0:8.24.0-41.el7_7.x86_64 as a component of RHV-M 4.3redhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

  • Workaroundrsyslog-mmnormalize-0:8.24.0-41.el7_7.x86_64 as a component of Red Hat Virtualization 4 Management Agent for RHEL 7 Hostsredhat_csaf

    This vulnerability requires the "imptcp" module to be enabled, and listening on a port that can potentially be reached by attackers. This module is not enabled by default in Red Hat Enterprise Linux 7. To check if imptcp is enabled, look for the string `$InputPTCPServerRun`in your rsyslog configuration.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU
v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · secalert@redhat.com USexploitability 3.9 · impact 1.4
v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · Red Hat Product Security US
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (32)

Products and version ranges known to be affected.

showing 20 of 32
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • RHBA-2019:2501Red Hat Bug Fix Advisory: rsyslog bug fix update2019-08-15csaf · redhat_csafUS

    Updated rsyslog packages that fix one bug are now available for Red Hat Virtualization 4.3

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

09

references (28)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan