Amazon Linux 2 Security Advisory: ALAS-2023-2225
Advisory Release Date: 2023-08-31 22:28 Pacific
Advisory Updated Date: 2023-09-07 18:50 Pacific
Severity:
Medium
Issue Overview:
lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count. (CVE-2023-36054)
Affected Packages:
krb5
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update krb5 to update your system.
New Packages:
aarch64:
krb5-devel-1.15.1-55.amzn2.2.6.aarch64
krb5-libs-1.15.1-55.amzn2.2.6.aarch64
krb5-server-1.15.1-55.amzn2.2.6.aarch64
krb5-server-ldap-1.15.1-55.amzn2.2.6.aarch64
krb5-workstation-1.15.1-55.amzn2.2.6.aarch64
krb5-pkinit-1.15.1-55.amzn2.2.6.aarch64
libkadm5-1.15.1-55.amzn2.2.6.aarch64
krb5-debuginfo-1.15.1-55.amzn2.2.6.aarch64
i686:
krb5-devel-1.15.1-55.amzn2.2.6.i686
krb5-libs-1.15.1-55.amzn2.2.6.i686
krb5-server-1.15.1-55.amzn2.2.6.i686
krb5-server-ldap-1.15.1-55.amzn2.2.6.i686
krb5-workstation-1.15.1-55.amzn2.2.6.i686
krb5-pkinit-1.15.1-55.amzn2.2.6.i686
libkadm5-1.15.1-55.amzn2.2.6.i686
krb5-debuginfo-1.15.1-55.amzn2.2.6.i686
src:
krb5-1.15.1-55.amzn2.2.6.src
x86_64:
krb5-devel-1.15.1-55.amzn2.2.6.x86_64
krb5-libs-1.15.1-55.amzn2.2.6.x86_64
krb5-server-1.15.1-55.amzn2.2.6.x86_64
krb5-server-ldap-1.15.1-55.amzn2.2.6.x86_64
krb5-workstation-1.15.1-55.amzn2.2.6.x86_64
krb5-pkinit-1.15.1-55.amzn2.2.6.x86_64
libkadm5-1.15.1-55.amzn2.2.6.x86_64
krb5-debuginfo-1.15.1-55.amzn2.2.6.x86_64