Vulnerability · Published Jul 11, 2023 · Assigned by mitre
CVE-2022-48521
Medium 5.3
In plain English
A medium-severity security flaw in the opendkim package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | opendkim | 2.11.0~beta2-8+deb12u1 | DEBIAN-CVE-2022-48521 |
| Debian:13 | opendkim | 2.11.0~beta2-9 | DEBIAN-CVE-2022-48521 |
| Debian:14 | opendkim | 2.11.0~beta2-9 | DEBIAN-CVE-2022-48521 |
| Ubuntu:22.04:LTS | opendkim | no fix listed | UBUNTU-CVE-2022-48521 |
| Ubuntu:24.04:LTS | opendkim | no fix listed | UBUNTU-CVE-2022-48521 |
| Ubuntu:25.10 | opendkim | no fix listed | UBUNTU-CVE-2022-48521 |
| Ubuntu:26.04:LTS | opendkim | no fix listed | UBUNTU-CVE-2022-48521 |
| Ubuntu:26.10 | opendkim | no fix listed | UBUNTU-CVE-2022-48521 |