CVE-2023-28097: OpenSIPS has vulnerability in the Content-Length Parser
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.9 and 3.2.6, a malformed SIP message containing a large Content-Length value and a specially crafted Request-URI causes a segmentation fault in OpenSIPS. This issue occurs when a large amount of shared memory using the -m flag was allocated to OpenSIPS, such as 10 GB of RAM. On the test system, this issue occurred when shared memory was set to 2362 or higher. This issue is fixed in versions 3.1.9 and 3.2.6. The only workaround is to guarantee that the Content-Length value of input messages is never larger than 2147483647.
Affected Software
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Event History
Frequently Asked Questions
What is the severity of CVE-2023-28097?
CVE-2023-28097 has been classified with a medium severity due to the potential for a denial of service caused by a segmentation fault.
How do I fix CVE-2023-28097?
To fix CVE-2023-28097, upgrade OpenSIPS to version 3.1.9 or 3.2.6 or later.
What causes CVE-2023-28097?
CVE-2023-28097 is caused by parsing a malformed SIP message that contains a large Content-Length value and a specially crafted Request-URI.
Which versions of OpenSIPS are affected by CVE-2023-28097?
OpenSIPS versions prior to 3.1.9 and between 3.2.0 and 3.2.5 are affected by CVE-2023-28097.
Is CVE-2023-28097 a critical vulnerability?
CVE-2023-28097 is not considered critical, but it poses a risk due to possible denial of service effects.