CVE-2023-27599

OpenSIPS has vulnerability in the parse_to_param() function

Description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, when the function `append_hf` handles a SIP message with a malformed To header, a call to the function `abort()` is performed, resulting in a crash. This is due to the following check in `data_lump.c:399` in the function `anchor_lump`. An attacker abusing this vulnerability will crash OpenSIPS leading to Denial of Service. It affects configurations containing functions that make use of the affected code, such as the function `append_hf`. This issue has been fixed in versions 3.1.7 and 3.2.4.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.08%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory opensips.org
Affected: OpenSIPS opensips
Published at:
Updated at:

References

Link Tags
https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx third party advisory
https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d third party advisory patch
https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-27599?
CVE-2023-27599 has been scored as a high severity vulnerability.
How to fix CVE-2023-27599?
To fix CVE-2023-27599, 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-2023-27599 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-27599 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-27599?
CVE-2023-27599 affects OpenSIPS opensips.
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