CVE-2022-45141: Weak Encryption
Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.17.12+dfsg-0+deb12u4Fixed in 2:4.22.11+dfsg-0+deb13u1Fixed in 2:4.22.10+dfsg-0+deb13u2Fixed in 2:4.25.1+dfsg-1 - Upgrade
Upgrade
alpine/sambato a version that resolves this vulnerability.Fixed in 4.15.13-r0 - Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.16.0+dfsg-2
Event History
Frequently Asked Questions
What is CVE-2022-45141?
CVE-2022-45141 is the identifier for the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
What is the severity of CVE-2022-45141?
CVE-2022-45141 has a severity rating of 9.8, which is considered critical.
Which software is affected by CVE-2022-45141?
Samba versions 4.15.13 and Samba versions 4.16.0 to 4.16.8 are affected by CVE-2022-45141.
What is the impact of CVE-2022-45141?
CVE-2022-45141 allows attackers to issue rc4-hmac encrypted tickets on vulnerable Samba Active Directory DCs.
How can I fix CVE-2022-45141?
To fix CVE-2022-45141, it is recommended to update Samba to a version that is not affected by the vulnerability.