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.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:2110 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:2439 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:2437 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHBA-2019:2501 | third party advisory vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881 | patch mitigation third party advisory issue tracking |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html | third party advisory mailing list |