A flaw was found in OpenEXR's hufDecode functionality. This flaw allows an attacker who can pass a crafted file to be processed by OpenEXR, to trigger an undefined right shift error. The highest threat from this vulnerability is to system availability.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26229 | mailing list third party advisory exploit |
| https://github.com/AcademySoftwareFoundation/openexr/pull/849 | third party advisory patch |
| https://github.com/AcademySoftwareFoundation/openexr/commit/51a92d67f53c08230734e74564c807043cbfe41e | third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=1939157 | third party advisory issue tracking |
| https://access.redhat.com/security/cve/CVE-2021-20304 | third party advisory |
| https://security.gentoo.org/glsa/202210-31 | third party advisory vendor advisory |