[slackware-security] samba

New samba packages are available for Slackware 15.0 and -current to
fix security issues.

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://vulners.com/cve/CVE-2022-37966
https://vulners.com/cve/CVE-2022-37967
https://vulners.com/cve/CVE-2022-38023
https://vulners.com/cve/CVE-2022-45141
(* Security fix *)

Where to find the new packages:

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project! :-)

Also see the “Get Slack” section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/samba-4.15.13-i586-1_slack15.0.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/samba-4.15.13-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/samba-4.17.4-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/samba-4.17.4-x86_64-1.txz

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:

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