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Advisories

quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search

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Severity
medium
Date
Affecting

  • quirc <= 1.2

CWE
  • CWE-834 Excessive Iteration
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
AlexandrKhromov2005, JohannYellow, HaiND from the Post and Telecommunication Institute of Technology
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.

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