Описание
Security update for krb5
This update for krb5 fixes the following issues:
- CVE-2025-3576: weakness in the MD5 checksum design allows for spoofing of GSSAPI-protected messages that are using RC4-HMAC-MD5 (bsc#1241219).
Krb5 as very old protocol supported quite a number of ciphers that are not longer up to current cryptographic standards.
To avoid problems with those, SUSE has by default now disabled those alorithms.
The following algorithms have been removed from valid krb5 enctypes:
- des3-cbc-sha1
- arcfour-hmac-md5
To reenable those algorithms, you can use allow options in krb5.conf:
[libdefaults] allow_des3 = true allow_rc4 = true
to reenable them.
Список пакетов
SUSE Linux Enterprise Module for Basesystem 15 SP6
SUSE Linux Enterprise Module for Basesystem 15 SP7
SUSE Linux Enterprise Module for Server Applications 15 SP6
SUSE Linux Enterprise Module for Server Applications 15 SP7
openSUSE Leap 15.6
Ссылки
- Link for SUSE-SU-2025:3699-1
- E-Mail link for SUSE-SU-2025:3699-1
- SUSE Security Ratings
- SUSE Bug 1241219
- SUSE CVE CVE-2025-3576 page
Описание
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
Затронутые продукты
Ссылки
- CVE-2025-3576
- SUSE Bug 1241218