CVE-2020-27507

Public Exploit

Description

The Kamailio SIP before 5.5.0 server mishandles INVITE requests with duplicated fields and overlength tag, leading to a buffer overflow that crashes the server or possibly have unspecified other impact.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.08%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/kamailio/kamailio/issues/2503 issue tracking exploit
https://github.com/kamailio/kamailio/commit/ada3701d22b1fd579f06b4f54fa695fa988e685f patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00030.html mailing list

Frequently Asked Questions

What is the severity of CVE-2020-27507?
CVE-2020-27507 has been scored as a critical severity vulnerability.
How to fix CVE-2020-27507?
To fix CVE-2020-27507, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27507 being actively exploited in the wild?
It is possible that CVE-2020-27507 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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