LIVE555 Streaming Media 0.93 RTSPServer GroupsockHelper.cpp handleHTTPCmd_TunnelingPOST input validation

Summaryinfo

A vulnerability described as problematic has been identified in LIVE555 Streaming Media 0.93. This affects the function handleHTTPCmd_TunnelingPOST of the file GroupsockHelper.cpp of the component RTSPServer. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2019-6256. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in LIVE555 Streaming Media 0.93. It has been declared as problematic. This vulnerability affects the function handleHTTPCmd_TunnelingPOST of the file GroupsockHelper.cpp of the component RTSPServer. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. It can cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in a GET request and a POST request within the same TCP session. This occurs because of a call to an incorrect virtual function pointer in the readSocket function in GroupsockHelper.cpp.

The bug was discovered 01/14/2019. The weakness was presented 01/14/2019 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2019-6256 since 01/14/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 121285 (openSUSE Security Update : live555 (openSUSE-2019-58)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176690 (Debian Security Update for liblivemedia (DLA 1690-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (121285). See VDB-130411 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• LIVE555

Name

• Streaming Media

Version

• 0.93

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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