Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2020-28011
High 7.8
In plain English
A high-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 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 66.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Exim 4 before 4.94.2 allows Heap-based Buffer Overflow in queue_run via two sender options: -R and -S. This may cause privilege escalation from exim to root.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28011 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28011 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28011 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28011 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28011 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28011 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28011 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28011 |