Bug 1939151 (CVE-2021-20303)
| Summary: | CVE-2021-20303 OpenEXR: Heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffer | ||
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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: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | jeischma, jridky, kwizart, rdieter, rh-spice-bugs |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | OpenEXR 2.5.4 | Doc Type: | If docs needed, set a value |
| Doc Text: |
There is a flaw in OpenEXR's dataWindowForTile function. 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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-11-02 23:19:55 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: | 1939178, 1944921, 1944922, 1944923 | ||
| Bug Blocks: | 1929339, 2002259 | ||
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Description
Michael Kaplan
2021-03-15 17:26:44 UTC
External References: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25505 Created OpenEXR tracking bugs for this issue: Affects: fedora-all [bug 1939178] Upstream PR which references patch commit and confirms it's association with aforementioned oss-fuzz report: https://github.com/AcademySoftwareFoundation/openexr/pull/831 Flaw summary: An integer overflow in IlmImf/ImfTiledMisc.cpp function dataWindowForTile(), when dataWindow.min + tileSize > INT_MAX, could lead to an out-of-bounds write of heap buffer. The data written does not appear to be directly controllable via this flaw, but could be combined with other flaws to achieve a greater impact. |