Buffer overflow in Unicorn-Engine Unicorn Engine
CVE-2021-36979
Unicorn Engine 1.0.2 has an out-of-bounds write in tb_flush_armeb (called from cpu_arm_exec_armeb and tcg_cpu_exec_armeb).
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: 0.009 (57.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Unicorn-Engine Unicorn Engine — versions 1.0.2
- Fedoraproject Fedora — versions 35
Weakness classification (CWE)
References
- github.com/google/oss-fuzz-vulns/blob/main/vulns/unicorn/OSV-2020-2305.yaml (Third Party Advisory)
- github.com/unicorn-engine/unicorn/commit/bf1713d9e011b55ca1f502a6779fc4722b4bb0… (Patch, Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2021-36979?
- CVE-2021-36979 is a medium-severity vulnerability in Unicorn-Engine Unicorn Engine, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-07-20.
- How severe is CVE-2021-36979?
- Medium severity. CVSS v3 base score is 5.5 out of 10.