Use After Free in Radare Radare2
CVE-2021-32495
Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory afterwards. This will allow attackers to cause denial of service.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% 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
- Radare Radare2 — versions 5.3.0
- Radare2 — versions radare2 5.3.0-git 26142
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/radareorg/radare2/issues/18666 (Patch, Issue Tracking, Vendor Advisory)
- github.com/radareorg/radare2/commit/5e16e2d1c9fe245e4c17005d779fde91ec0b9c05 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-32495?
- CVE-2021-32495 is a critical-severity vulnerability in Radare Radare2, classified under Use After Free. CVSS score: 10.0/10. Published 2023-07-07.
- How severe is CVE-2021-32495?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2021-32495 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.