Vulnerability · Published Aug 2, 2021 · Assigned by fedora
CVE-2021-3673
High 7.5
In plain English
A high-severity improper input validation in radare2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.8%top 21.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in Radare2 in version 5.3.1. Improper input validation when reading a crafted LE binary can lead to resource exhaustion and DoS.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | radare2 | 5.4.0-r0 | ALPINE-CVE-2021-3673 |
| Alpine:v3.21 | radare2 | 5.4.0-r0 | ALPINE-CVE-2021-3673 |
| Alpine:v3.22 | radare2 | 5.4.0-r0 | ALPINE-CVE-2021-3673 |
| Alpine:v3.23 | radare2 | 5.4.0-r0 | ALPINE-CVE-2021-3673 |
| Alpine:v3.24 | radare2 | 5.4.0-r0 | ALPINE-CVE-2021-3673 |
| Ubuntu:25.10 | radare2 | no fix listed | UBUNTU-CVE-2021-3673 |
| Ubuntu:26.04:LTS | radare2 | no fix listed | UBUNTU-CVE-2021-3673 |
| Ubuntu:26.10 | radare2 | no fix listed | UBUNTU-CVE-2021-3673 |
Affected products (as reported)
Weakness: CWE-20
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1989130 x_refsource_MISC
- FEDORA-2021-c1a0dc39b4 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-55198e6804 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-d206891379 vendor-advisory, x_refsource_FEDORA
- FEDORA-2022-ba3248e596 vendor-advisory, x_refsource_FEDORA
- FEDORA-2022-3fc85cd09c vendor-advisory, x_refsource_FEDORA