Amazon Linux 2 Security Advisory: ALAS-2018-1129
Advisory Release Date: 2018-12-13 20:20 Pacific
Advisory Updated Date: 2018-12-19 17:41 Pacific
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.(CVE-2018-5730)
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to cause a denial of service (NULL pointer dereference) or bypass a DN container check by supplying tagged data that is internal to the database module.(CVE-2018-5729)
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.
aarch64:
krb5-devel-1.15.1-20.amzn2.0.1.aarch64
krb5-libs-1.15.1-20.amzn2.0.1.aarch64
krb5-server-1.15.1-20.amzn2.0.1.aarch64
krb5-server-ldap-1.15.1-20.amzn2.0.1.aarch64
krb5-workstation-1.15.1-20.amzn2.0.1.aarch64
krb5-pkinit-1.15.1-20.amzn2.0.1.aarch64
libkadm5-1.15.1-20.amzn2.0.1.aarch64
krb5-debuginfo-1.15.1-20.amzn2.0.1.aarch64
i686:
krb5-devel-1.15.1-20.amzn2.0.1.i686
krb5-libs-1.15.1-20.amzn2.0.1.i686
krb5-server-1.15.1-20.amzn2.0.1.i686
krb5-server-ldap-1.15.1-20.amzn2.0.1.i686
krb5-workstation-1.15.1-20.amzn2.0.1.i686
krb5-pkinit-1.15.1-20.amzn2.0.1.i686
libkadm5-1.15.1-20.amzn2.0.1.i686
krb5-debuginfo-1.15.1-20.amzn2.0.1.i686
src:
krb5-1.15.1-20.amzn2.0.1.src
x86_64:
krb5-devel-1.15.1-20.amzn2.0.1.x86_64
krb5-libs-1.15.1-20.amzn2.0.1.x86_64
krb5-server-1.15.1-20.amzn2.0.1.x86_64
krb5-server-ldap-1.15.1-20.amzn2.0.1.x86_64
krb5-workstation-1.15.1-20.amzn2.0.1.x86_64
krb5-pkinit-1.15.1-20.amzn2.0.1.x86_64
libkadm5-1.15.1-20.amzn2.0.1.x86_64
krb5-debuginfo-1.15.1-20.amzn2.0.1.x86_64