Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The rsyslog Project | rsyslog: | 8.27.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rsyslog | 8.27.0-2 | — |
| Debian 13 | rsyslog | 8.27.0-2 | — |
| Debian 12 | rsyslog | 8.27.0-2 | — |
| Debian 9 | rsyslog | 8.24.0-1+deb9u2 | DLA-3016-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | rsyslog | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | rsyslog | 8.16.0-1ubuntu3.1+esm1 | USN-5419-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | imgbased +1 | 1.1.9-0.1.el7ev | RHSA-2019:2437 |
| RHEL 7 | ovirt-node-ng +2 | 4.3.5-0.20190717.0.el7ev | RHSA-2019:2437 |
| RHEL 7 | redhat-release-virtualization-host +1 | 4.3.5-2.el7ev | RHSA-2019:2437 |
| RHEL 7 | redhat-virtualization-host +1 | 4.3.5-20190722.0.el7_7 | RHSA-2019:2437 |
| RHEL 7 | rhvm-appliance | 2:4.3-20190722.0.el7 | RHSA-2019:2439 |
| RHEL 7 | rsyslog +17 | 8.24.0-38.el7 | RHSA-2019:2110, RHBA-2019:2501 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Manager 4 | rsyslog +2 | 8.24.0-41.el7_7 | RHBA-2019:2501 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | rsyslog | 8.24.0-3.19.1 | SUSE-SU-2019:0209-1 |
| SLES 12 SP3 | rsyslog | 8.24.0-3.19.1 | SUSE-SU-2019:0209-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | rsyslog | 8.24.0-3.19.1 | SUSE-SU-2019:0209-1 |
| SLES for SAP 12 SP3 | rsyslog | 8.24.0-3.19.1 | SUSE-SU-2019:0209-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | rsyslog +17 | 8.24.0-41.amzn2.2.1 | ALAS2-2019-1369 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | rsyslog +16 | 8.24.0-38.0.2.el7 | ELSA-2019-2110 |
| Oracle Linux 7 | rsyslog-doc | 8.24.0-38.el7 | ELSA-2019-2110 |
Advisories 9
- RHSA-2019:2437 Red Hat Security Advisory: Red Hat Virtualization security update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2019:2439 Red Hat Security Advisory: rhvm-appliance security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 9, 2026
- RHSA-2019:2110 Red Hat Security Advisory: rsyslog security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHBA-2019:2501 Red Hat Bug Fix Advisory: rsyslog bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-5419-1 rsyslog vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3016-1 rsyslog - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:0209-1 Security update for rsyslog SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2019-1369 Moderate: rsyslog security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 22, 2019
- ELSA-2019-2110 Moderate: rsyslog security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2019
References
- RHSA-2019:2110 vendor-advisory
- RHSA-2019:2439 vendor-advisory
- RHSA-2019:2437 vendor-advisory
- RHBA-2019:2501 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881
- [debian-lts-announce] 20220520 [SECURITY] [DLA 3016-1] rsyslog security update mailing-list