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CVE-2022-48521

An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to...

5.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.74%Up 0.7 points since Jul 12, 2023
90%50%10%1%

What each source reports

NVD Score used 5.3

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.

Record
CVE-2022-48521
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2022-48521
Updated
2026-11-02
EUVDEUVD-2022-51217 No score

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.

Record
EUVD-2022-51217
Updated
2026-11-03
GitHub AdvisoriesGHSA-3q5m-9r3g-pqfj 5.3

An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to...

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.

Record
GHSA-3q5m-9r3g-pqfj
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2022-48521 5.3

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.

Record
DEBIAN-CVE-2022-48521
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-03
OSVUBUNTU-CVE-2022-48521 5.3

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.

Record
UBUNTU-CVE-2022-48521
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSV No score

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.

Record
CVE-2022-48521
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
opendkim
Debian:12
before 2.11.0~beta2-8+deb12u1, plus listed versions
2.11.0~beta2-8
2.11.0~beta2-8+deb12u1
opendkim
Debian:13
before 2.11.0~beta2-9
2.11.0~beta2-9
opendkim
Debian:14
before 2.11.0~beta2-9
2.11.0~beta2-9
opendkim
Debian:10
before 2.11.0~alpha-12+deb10u1, plus listed versions
2.11.0~alpha-12
2.11.0~alpha-12+deb10u1
opendkim
Ubuntu:16.04:LTS
All versions, plus listed versions
2.10.3-3build1
None known
opendkim
Ubuntu:18.04:LTS
All versions, plus listed versions
2.11.0~alpha-102.11.0~alpha-112.11.0~alpha-11build1
None known
opendkim
Ubuntu:20.04:LTS
All versions, plus listed versions
2.11.0~alpha-122.11.0~alpha-132.11.0~alpha-142.11.0~beta2-1
None known
opendkim
Ubuntu:22.04:LTS
All versions, plus listed versions
2.11.0~beta2-4build12.11.0~beta2-52.11.0~beta2-6
None known
opendkim
Ubuntu:24.04:LTS
All versions, plus listed versions
2.11.0~beta2-82.11.0~beta2-92.11.0~beta2-9build32.11.0~beta2-9build4
None known
opendkim
Ubuntu:25.10
All versions, plus listed versions
2.11.0~beta2-9.12.11.0~beta2-9.2
None known
opendkim
Ubuntu:26.10
All versions, plus listed versions
2.11.0~beta2-9.2build12.11.0~beta2-9.2build2
None known
opendkim
Ubuntu:26.04:LTS
All versions, plus listed versions
2.11.0~beta2-9.22.11.0~beta2-9.2build1
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-48521 is a medium vulnerability (CVSS 5.3) in Opendkim, published July 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 55th percentile. Fixed in opendkim 2.11.0~beta2-8+deb12u1.

References

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