CVE-2019-17041

Summary

CVECVE-2019-17041
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-07 16:15:00 UTC
Updated2023-11-07 03:06:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 30 All All All
Operating System Fedoraproject Fedora 31 All All All
Operating System Opensuse Leap 15.0 All All All
Operating System Opensuse Leap 15.1 All All All
Application Rsyslog Rsyslog 8.1908.0 All All All
Application Rsyslog Rsyslog 8.1908.0 All All All

References

ReferenceSourceLinkTags
pmaixforwardedfrom bugfix: potential misadressing by rgerhards · Pull Request #3884 · rsyslog/rsyslog · GitHub CONFIRM github.com Patch, Third Party Advisory
[SECURITY] Fedora 30 Update: rsyslog-8.1911.0-1.fc30 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 31 Update: rsyslog-8.1911.0-1.fc31 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
rsyslog/ChangeLog at v8-stable · rsyslog/rsyslog · GitHub CONFIRM github.com Release Notes
[SECURITY] Fedora 31 Update: rsyslog-8.1911.0-1.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] [DLA 2835-1] rsyslog security update MLIST lists.debian.org
[SECURITY] Fedora 30 Update: rsyslog-8.1911.0-1.fc30 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[security-announce] openSUSE-SU-2019:2501-1: moderate: Security update f SUSE lists.opensuse.org
[security-announce] openSUSE-SU-2019:2500-1: moderate: Security update f SUSE lists.opensuse.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 178924 Debian Security Update for rsyslog (DLA 2835-1)
  • 296073 Oracle Solaris 11.4 Support Repository Update (SRU) 24.75.2 Missing (CPUJUL2020)
  • 377546 Alibaba Cloud Linux Security Update for rsyslog (ALINUX2-SA-2020:0047)
  • 500606 Alpine Linux Security Update for rsyslog
  • 504366 Alpine Linux Security Update for rsyslog
  • 904907 Common Base Linux Mariner (CBL-Mariner) Security Update for rsyslog (12422)
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