Integer overflow in Openexr
CVE-2021-20303
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Openexr
- Debian Linux — versions 10.0
- Openexr — versions Fixed in v2.5.4 and beyond.
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/pull/831 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/12/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20303?
- CVE-2021-20303 is a medium-severity vulnerability in Openexr, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2022-03-04.
- How severe is CVE-2021-20303?
- Medium severity. CVSS v3 base score is 6.1 out of 10.