Slackware: 2022-351-01: samba Security Update
Summary
Here are the details from the Slackware 15.0 ChangeLog: patches/packages/samba-4.15.13-i586-1_slack15.0.txz: Upgraded. This update fixes security issues: This is the Samba CVE for the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability disclosed by Microsoft on Nov 8 2022. A Samba Active Directory DC will issue weak rc4-hmac session keys for use between modern clients and servers despite all modern Kerberos implementations supporting the aes256-cts-hmac-sha1-96 cipher. On Samba Active Directory DCs and members 'kerberos encryption types = legacy' would force rc4-hmac as a client even if the server supports aes128-cts-hmac-sha1-96 and/or aes256-cts-hmac-sha1-96. This is the Samba CVE for the Windows Kerberos Elevation of Privilege Vulnerability disclosed by Microsoft on Nov 8 2022. A service account with the special constrained delegation permission could forge a more powerful ticket than the one it was presented with. The "RC4" protection of the NetLogon Secure channel uses the same algorithms as rc4-hmac cryptography in Kerberos, and so must also be assumed to be weak. 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). Note that there are several important behavior changes included in this release, which may cause compatibility problems interacting with system still expecting the former behavior. Please read the advisories of CVE-2022-37966, CVE-2022-37967 and CVE-2022-38023 carefully! For more information, see: https://www.samba.org/samba/security/CVE-2022-37966.html https://www.samba.org/samba/security/CVE-2022-37967.html https://www.samba.org/samba/security/CVE-2022-38023.html https://www.samba.org/samba/security/CVE-2022-45141.html https://www.cve.org/CVERecord?id=CVE-2022-37966 https://www.cve.org/CVERecord?id=CVE-2022-37967 https://www.cve.org/CVERecord?id=CVE-2022-38023 https://www.cve.org/CVERecord?id=CVE-2022-45141 (* Security fix *)
Where Find New Packages
Thanks to the friendly folks at the OSU Open Source Lab
(https://osuosl.org/) for donating FTP and rsync hosting
to the Slackware project! :-)
Also see the "Get Slack" section on http://www.slackware.com/ for
additional mirror sites near you.
Updated package for Slackware 15.0:
Updated package for Slackware x86_64 15.0:
Updated package for Slackware -current:
Updated package for Slackware x86_64 -current:
MD5 Signatures
Slackware 15.0 package:
4f00b47c418d2cc088c583214fcae013 samba-4.15.13-i586-1_slack15.0.txz
Slackware x86_64 15.0 package:
17a8269e24b94c18079ab854d99c4558 samba-4.15.13-x86_64-1_slack15.0.txz
Slackware -current package:
742f1ba1ddcb483294d8c8b172aaa8b4 n/samba-4.17.4-i586-1.txz
Slackware x86_64 -current package:
dfb34c60cfe6a4dea5d3ab03ddc109f7 n/samba-4.17.4-x86_64-1.txz
Installation Instructions
Installation instructions: Upgrade the package as root: # upgradepkg samba-4.15.13-i586-1_slack15.0.txz Then, if Samba is running restart it: # /etc/rc.d/rc.samba restart