Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2020-28019
High 7.5
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 61.7% (higher than 99.2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)61.7%top 0.8% 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 Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28019 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28019 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28019 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28019 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28019 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28019 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28019 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28019 |