Amazon Linux 1 Security Advisory: ALAS-2020-1374
Advisory Release Date: 2020-05-22 20:58 Pacific
Advisory Updated Date: 2020-06-03 17:22 Pacific
Severity:
Medium
Issue Overview:
A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.(CVE-2018-20217)
Affected Packages:
krb5
Issue Correction:
Run yum update krb5 to update your system.
New Packages:
i686:
krb5-debuginfo-1.15.1-46.48.amzn1.i686
krb5-devel-1.15.1-46.48.amzn1.i686
libkadm5-1.15.1-46.48.amzn1.i686
krb5-server-ldap-1.15.1-46.48.amzn1.i686
krb5-server-1.15.1-46.48.amzn1.i686
krb5-workstation-1.15.1-46.48.amzn1.i686
krb5-pkinit-openssl-1.15.1-46.48.amzn1.i686
krb5-libs-1.15.1-46.48.amzn1.i686
src:
krb5-1.15.1-46.48.amzn1.src
x86_64:
krb5-workstation-1.15.1-46.48.amzn1.x86_64
krb5-libs-1.15.1-46.48.amzn1.x86_64
libkadm5-1.15.1-46.48.amzn1.x86_64
krb5-server-ldap-1.15.1-46.48.amzn1.x86_64
krb5-server-1.15.1-46.48.amzn1.x86_64
krb5-devel-1.15.1-46.48.amzn1.x86_64
krb5-pkinit-openssl-1.15.1-46.48.amzn1.x86_64
krb5-debuginfo-1.15.1-46.48.amzn1.x86_64