Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2020-28025
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 2.8% (higher than 86% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.8%top 13.6% 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 because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28025 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28025 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28025 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28025 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28025 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28025 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28025 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28025 |