GStreamer up to 1.24.9 gstssaparse.c memmove out-of-bounds write

Summaryinfo

A vulnerability has been found in GStreamer up to 1.24.9 and classified as critical. This affects the function memmove of the file gstssaparse.c. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2024-47541. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GStreamer up to 1.24.9. It has been rated as critical. This issue affects the function memmove of the file gstssaparse.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

GStreamer is a library for constructing graphs of media-handling components. An OOB-write vulnerability has been identified in the gst_ssa_parse_remove_override_codes function of the gstssaparse.c file. This function is responsible for parsing and removing SSA (SubStation Alpha) style override codes, which are enclosed in curly brackets ({}). The issue arises when a closing curly bracket "}" appears before an opening curly bracket "{" in the input string. In this case, memmove() incorrectly duplicates a substring. With each successive loop iteration, the size passed to memmove() becomes progressively larger (strlen(end+1)), leading to a write beyond the allocated memory bounds. This vulnerability is fixed in 1.24.10.

It is possible to read the advisory at securitylab.github.com. The identification of this vulnerability is CVE-2024-47541 since 09/25/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 213023 (Debian dsa-5831 : gir1.2-gst-plugins-base-1.0 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.24.10 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (213023). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Multimedia Processing Software

Name

• GStreamer

Version

• 1.24.0
• 1.24.1
• 1.24.2
• 1.24.3
• 1.24.4
• 1.24.5
• 1.24.6
• 1.24.7
• 1.24.8
• 1.24.9

License

• open-source

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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