Bug 1939145 (CVE-2021-3476)
| Summary: | CVE-2021-3476 OpenEXR: Undefined-shift in Imf_2_5::unpack14 | ||
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| Product: | [Other] Security Response | Reporter: | Michael Kaplan <mkaplan> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | cbpilm, jeischma, jridky, kwizart, rdieter, rh-spice-bugs |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | OpenEXR 3.0.0-beta, OpenEXR 2.4.3 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in OpenEXR's B44 uncompression functionality. An attacker who is able to submit a crafted file to OpenEXR could trigger shift overflows, potentially affecting application availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-11-02 23:18:45 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1939171, 1944371, 1944372, 1944373, 1944374 | ||
| Bug Blocks: | 1929339, 1944370 | ||
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Description
Michael Kaplan
2021-03-15 17:25:53 UTC
External References: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24787 Created OpenEXR tracking bugs for this issue: Affects: fedora-all [bug 1939171] Flaw Summary: In OpenEXR/IlmImf/ImfB44Compressor.cpp, bitwise shift calculations could result in undesired unsigned integer wraparounds. The upstream patch modifies these calculations to ignore the unused bits. Upstream patch: https://github.com/AcademySoftwareFoundation/openexr/commit/eec0dba242bedd2778c973ae4af112107b33d9c9 This is fixed in OpenEXR v2.5.4, v2.5.5, and v3.0.1+. |