CVE-2021-20303 Information

Description

A flaw found in function dataWindowForTile() of IlmImf/ImfTiledMisc.cpp. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger an integer overflow leading to an out-of-bounds write on the heap. The greatest impact of this flaw is to application availability with some potential impact to data integrity as well.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1939151 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25505 https://github.com/AcademySoftwareFoundation/openexr/pull/831

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

HIGH

Base Severity

6.1