Buffer overflow in Openexr
CVE-2021-45942
OpenEXR 3.1.x before 3.1.4 has a heap-based buffer overflow in Imf_3_1::LineCompositeTask::execute (called from IlmThread_3_1::NullThreadPoolProvider::addTask and IlmThread_3_1::ThreadPool::addGlobalTask). NOTE: db217f2 may be inapplicable.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Openexr
- Debian Linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/google/oss-fuzz-vulns/blob/main/vulns/openexr/OSV-2021-1627.yaml (Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Patch, Mailing List, Third Party Advisory, Issue Tracking)
- github.com/AcademySoftwareFoundation/openexr/commit/db217f29dfb24f6b4b5100c24ac… (Patch, Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/pull/1209 (Exploit, Patch, Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/commit/11cad77da87c4fa2aab7d58dd53… (Patch, Third Party Advisory)
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.1.4 (Third Party Advisory, Release Notes)
- github.com/AcademySoftwareFoundation/openexr/blob/v3.1.4/CHANGES.md (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2021-45942?
- CVE-2021-45942 is a medium-severity vulnerability in Openexr, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2022-01-01.
- How severe is CVE-2021-45942?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-45942 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.