Vulnerability · Published May 3, 2022 · Assigned by icscert
CVE-2021-27419uClibc-ng Integer Overflow or Wraparound
High 7.3
In plain English
A high-severity integer overflow in uClibc-ng from uClibc-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.7%top 22.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | uclibc | no fix listed | DEBIAN-CVE-2021-27419 |
| Debian:13 | uclibc | no fix listed | DEBIAN-CVE-2021-27419 |
| Debian:14 | uclibc | 1.0.54-1 | DEBIAN-CVE-2021-27419 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 x_refsource_CONFIRM
- https://downloads.uclibc-ng.org/releases/ x_refsource_CONFIRM