CVE-2023-28098 OpenSIPS has vulnerability in the Digest Authentication Parser

Medium 5.9 Published 15 Mar 2023 Updated 25 Feb 2025

A crafted Authorization header can crash the OpenSIPS server or cause erratic behavior, requiring configurations that use digest authentication functions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-28098?

CVE-2023-28098 is a medium-severity denial of service vulnerability in opensips, published on 15 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, a specially crafted Authorization header causes OpenSIPS to crash or behave in an unexpected way due to a bug in the function `parse_param_name()` . This issue was discovered while performing coverage guided fuzzing of the function parse_msg. The AddressSanitizer identified that the issue occurred in the function `q_memchr()` which is being called by the function `parse_param_name()`. This issue may cause erratic program behaviour or a server crash. It affects configurations containing functions that make use of the affected code, such as the function `www_authorize()` . Versions 3.1.7 and 3.2.4 contain a fix.

Weakness: CWE-20

Which versions are affected by CVE-2023-28098?

It affects 1 product.

Products include Opensips Opensips.

How do I fix CVE-2023-28098?

No fix has been published for CVE-2023-28098 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-28098 being exploited?

There is no known exploitation of CVE-2023-28098 in the wild and no public exploit code.

Sources

Also known as GHSA-jrqg-vppj-hr2h, UBUNTU-CVE-2023-28098.