Headline

CVE-2023-28096: Memory leak in cJSON lib

OpenSIPS, a Session Initiation Protocol (SIP) server implementation, has a memory leak starting in the 2.3 branch and priot to versions 3.1.8 and 3.2.5. The memory leak was detected in the function parse_mi_request while performing coverage-guided fuzzing. This issue can be reproduced by sending multiple requests of the form {"jsonrpc": "2.0","method": "log_le. This malformed message was tested against an instance of OpenSIPS via FIFO transport layer and was found to increase the memory consumption over time. To abuse this memory leak, attackers need to reach the management interface (MI) which typically should only be exposed on trusted interfaces. In cases where the MI is exposed to the internet without authentication, abuse of this issue will lead to memory exhaustion which may affect the underlying system’s availability. No authentication is typically required to reproduce this issue. On the other hand, memory leaks may occur in other areas of OpenSIPS where the cJSON library is used for parsing JSON objects. The issue has been fixed in versions 3.1.8 and 3.2.5.

1 year ago

CVE

Open in Source

#js #git #auth

A memory leak was detected in the function parse_mi_request while performing coverage-guided
fuzzing.

This issue can be reproduced by sending multiple requests of the following form:
{"jsonrpc": "2.0","method": "log_le

This malformed message was tested against an instance of OpenSIPS via FIFO transport layer and was
found to increase the memory consumption over time.

Impact

To abuse this memory leak, attackers need to reach the management interface which typically, should be
only exposed on trusted interfaces. In cases where the MI is exposed to the internet without authentication,
abuse of this issue will lead to memory exhaustion which may affect the underlying system’s availability. No
authentication is typically required to reproduce this issue.

On the other hand, memory leaks may occur in other areas of OpenSIPS where the cJSON library is used for parsing JSON objects.

Patches

The issue has been fixed in commit: 4175687.

References

Read more about this issue in the Audit Document section 3.14.

For more information

If you have any questions or comments about this advisory: