Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2021-27216
Medium 6.3
In plain English
A medium-severity security flaw in the exim package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.3Medium
Exploit odds (30 days)1.0%top 37.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2021-27216 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2021-27216 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2021-27216 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2021-27216 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2021-27216 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2021-27216 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2021-27216 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2021-27216 |