Krb5: kerberos rc4-hmac-md5 checksum vulnerability enabling message spoofing via md5 collisions
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.
Affected products
krb5
- <1.22
- *
rhcos
discovery/discovery-server-rhel9
- *
aap-cloud-metrics-collector-container
ansible-automation-platform-24/ee-minimal-rhel9
ansible-automation-platform-25/ee-minimal-rhel8
ansible-automation-platform-24/ee-supported-rhel8
ansible-automation-platform-24/ee-supported-rhel9
registry.redhat.io/discovery/discovery-server-rhel9
- *
ansible-automation-platform-24/ansible-builder-rhel9
ansible-automation-platform-25/ansible-builder-rhel8
ansible-automation-platform-24/platform-resource-runner-rhel8
ansible-automation-platform-25/platform-resource-runner-rhel8
Matching in nixpkgs
pkgs.pam_krb5
PAM module allowing PAM-aware applications to authenticate users by performing an AS exchange with a Kerberos KDC
-
nixos-unstable -
- nixpkgs-unstable krb5-4.11
pkgs.python312Packages.krb5
Kerberos API bindings for Python
-
nixos-unstable -
- nixpkgs-unstable krb5-0.7.1
pkgs.python313Packages.krb5
Kerberos API bindings for Python
-
nixos-unstable -
- nixpkgs-unstable krb5-0.7.1
Package maintainers
-
@invokes-su Souvik Sen <nixpkgs-commits@deshaw.com>
-
@despsyched Priyanshu Tripathi <priyanshu.tripathi@deshaw.com>
-
@de11n Elliot Cameron <nixpkgs-commits@deshaw.com>