Vulnerability in Ultra Video Group Kvazaar

[ Description ]Official description

Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/ultravideo/kvazaar/blob/v2.3.2/src/encmain.c
• github.com/ultravideo/kvazaar/commit/8a2f109be283e87008c679d635966cc034da39c6
• github.com/ultravideo/kvazaar/issues/452
• github.com/ultravideo/kvazaar/releases/tag/v2.3.2
• hackmd.io/@haindpwn/kvazaar-y4m-header-missing-newline-infinite-loop
• www.vulncheck.com/advisories/kvazaar-through-2.3.2-infinite-loop-dos-via-y4m-header-parser