CVE-2023-29573: 
NixOS vulnerability analysis and mitigation

Bento4 v1.6.0-639 was discovered to contain an out-of-memory bug in the mp4info component. The vulnerability was identified and disclosed on March 14, 2023, and is tracked as CVE-2023-29573. The issue affects the mp4info component of Bento4 software when processing certain MP4 files (GitHub Issue).

The vulnerability occurs in the AP4Array::EnsureCapacity function when attempting to allocate memory. Specifically, the issue manifests when the allocator tries to allocate 0x800000010 bytes of memory, leading to an out-of-memory condition. The vulnerability can be triggered through the AP4TrunAtom constructor when processing MP4 files. The CVSS v3.1 base score for this vulnerability is 5.5 (Medium), with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NVD).

When exploited, this vulnerability can cause a denial of service condition through program termination due to memory allocation failure. The impact is primarily on the availability of the system, with no direct impact on confidentiality or integrity (NVD).

For systems where these errors are not critical, users can set allocatormayreturn_null=1 as a temporary workaround. However, this is not a complete solution to the underlying issue (GitHub Issue).