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CVE-2019-17042

31
FAUCET Score

CVE-2019-17042 is a critical heap overflow vulnerability in Rsyslog v8.1908.0, specifically within the pmcisconames.c parser for Cisco log messages. This flaw affects various Linux distributions including Debian, Fedora, and OpenSUSE. With a CVSS score of 9.8, it allows unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability due to a parsing error that misinterprets string lengths, leading to a large memmove operation. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
8.1908.0CPE matchmatch criteria
cpe:2.3:a:rsyslog:rsyslog:8.1908.0:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.07%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0307 is in the 78th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.5 for RHEL 7Fixed in: ansible-tower-35/ansible-tower:3.5.6-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.6 for RHEL 7Fixed in: ansible-tower-36/ansible-tower:3.6.4-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: rsyslog-0:8.24.0-52.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: rsyslog-0:8.1911.0-3.el8
View patch

Vendor Advisories (1)

redhatCVE-2019-17042Moderate

rsyslog: heap-based overflow in contrib/pmcisconames/pmcisconames.c

Oct 1, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-11/msg00031.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-11/msg00032.html
Mailing ListThird Party Advisory
github.com / rsyslog/rsyslog/blob/v8-stable/ChangeLog
Release NotesThird Party Advisory
github.com / rsyslog/rsyslog/pull/3883
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2021/11/msg00030.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KPNCHI7X2IEXRH6RYD6IDPR4PLB5RPC7
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/W6SUQE25RD37CD24BHKUWMG27U5RQ2FU