Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2020-28023
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 2.6% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.6%top 14.5% 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 Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28023 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28023 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28023 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28023 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28023 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28023 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28023 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28023 |