Integer overflow in Openexr
CVE-2021-20304
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000
Affected products
- Openexr
- Openexr — versions Fixed in OpenEXR 3.0.0-beta
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Mailing List, Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/pull/849 (Patch, Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/commit/51a92d67f53c08230734e74564c… (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/CVE-2021-20304 (Third Party Advisory)
- security.gentoo.org/glsa/202210-31 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20304?
- CVE-2021-20304 is a high-severity vulnerability in Openexr, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2021-20304?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-20304 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.