Vulnerability in dlbeer quirc

[ Description ]Official description

quirc through 1.2 contains an excessive-iteration vulnerability in find_alignment_pattern() in lib/identify.c that allows attackers to hang quirc_end() with a crafted image. Attackers can arrange three finder patterns producing a near-degenerate perspective transform, causing billions of region_code() iterations that exhaust CPU in applications decoding attacker-supplied QR images.

[ 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/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c
• github.com/dlbeer/quirc/issues/162
• github.com/dlbeer/quirc/pull/159
• hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos
• www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pat…