Out-of-bounds read in rsyslog - CVE-2019-17040
Published: November 14, 2019
Vulnerability identifier: #VU22772
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17040
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists in "contrib/pmdb2diag/pmdb2diag.c" due to a boundary condition when the level length is mishandled. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.
Affected software
rsyslog
rsyslog (Alpine package)
rsyslog
Fedora
rsyslog (Alpine package)
rsyslog
Fedora
How to mitigate CVE-2019-17040
Install updates from vendor's website.
rsyslog - update to 8.1910.0
rsyslog (Alpine package) - update to 8.1910.0-r0
rsyslog - addressed in versions 8.1911.0-1.fc30, 8.1911.0-1.fc31
rsyslog (Alpine package) - update to 8.1910.0-r0
rsyslog - addressed in versions 8.1911.0-1.fc30, 8.1911.0-1.fc31