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NVD / CVE Program· CNA mitre

CVE-2019-17041: An issue was discovered in Rsyslog v8.1908.0.

Noroxi assessment

Priority: Plan (action score 40/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 4.4% (FIRST EPSS); higher than 91.4% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: rsyslog (Alpine:v3.10) 8.1904.0-r1; rsyslog (Alpine:v3.11) 8.1908.0-r1; rsyslog (Alpine:v3.7) 8.31.0-r1.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Upgrade to rsyslog (Alpine:v3.10) 8.1904.0-r1; rsyslog (Alpine:v3.11) 8.1908.0-r1; rsyslog (Alpine:v3.7) 8.31.0-r1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available
Published
Oct 7, 2019
Updated
Jun 16, 2026
EPSS
4.4% · 91th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 4.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
rsyslogrsyslog
debiandebian linux
fedoraprojectfedora
opensuseleap

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux9.0
  • fedoraproject fedora30
  • fedoraproject fedora31
  • opensuse leap15.0
  • opensuse leap15.1
  • rsyslog rsyslog8.1908.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10rsyslogbefore 8.1904.0-r18.1904.0-r1
Alpine:v3.11rsyslogbefore 8.1908.0-r18.1908.0-r1
Alpine:v3.7rsyslogbefore 8.31.0-r18.31.0-r1
Alpine:v3.8rsyslogbefore 8.34.0-r18.34.0-r1
Alpine:v3.9rsyslogbefore 8.40.0-r48.40.0-r4
Debian:12rsyslogbefore 8.1910.0-18.1910.0-1
Debian:8rsyslogbefore 8.4.2-1+deb8u38.4.2-1+deb8u3
Debian:9rsyslogbefore 8.24.0-1+deb9u18.24.0-1+deb9u1
openSUSE:Leap 15.0rsyslogbefore 8.33.1-lp150.2.19.18.33.1-lp150.2.19.1
openSUSE:Leap 15.1rsyslogbefore 8.33.1-lp151.6.10.18.33.1-lp151.6.10.1
Red Hat:enterprise_linux:7::clientrsyslogbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-cryptobefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-debuginfobefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-docbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-elasticsearchbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-gnutlsbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-gssapibefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-kafkabefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-libdbibefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-mmauditbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-mmjsonparsebefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-mmkubernetesbefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-mmnormalizebefore 0:8.24.0-52.el70:8.24.0-52.el7
Red Hat:enterprise_linux:7::clientrsyslog-mmsnmptrapdbefore 0:8.24.0-52.el70:8.24.0-52.el7

+41

Same product

rsyslog: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-17042An issue was discovered in Rsyslog v8.1908.0.
    40Plan
  • CVE-2019-17040contrib/pmdb2diag/pmdb2diag.c in Rsyslog v8.1908.0 allows out-of-bounds access because the level length is mishandled.
    40Plan
  • CVE-2017-12588The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, possibly allowing a format stri
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2015-3243Jul 25, 2017 · rsyslog uses weak permissions for generating log files, which allows local users to obtain sensitive information by reading files in /var/lo
    22Monitor
  • ← EarlierCVE-2018-16881Jan 25, 2019 · A denial of service vulnerability was found in rsyslog in the imptcp module.
    31Monitor
  • Later →CVE-2011-1488Nov 13, 2019 · A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when $RepeatedMsgReduction was enabled.
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:rsyslog8.1904.0-r1 · Alpine:v3.10Package registry (OSV)
debian:rsyslog8.1910.0-1 · Debian:12Package registry (OSV)
opensuse:rsyslog8.33.1-lp150.2.19.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:rsyslog0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-crypto0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-debuginfo0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-doc0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-elasticsearch0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-gnutls0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-gssapi0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-kafka0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-libdbi0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-mmaudit0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-mmjsonparse0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:rsyslog-relp0:8.24.0-52.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:rsyslog8.24.0-3.33.2 · SUSE:Linux Enterprise Desktop 12 SP4Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02020-12-05

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+424 d
  3. TodayNov 7, 2026+2588 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records