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krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure

🗓️ 10 Apr 2018 12:25:34Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

An authenticated attacker can crash MIT Kerberos krb5kdc with invalid S4U2Self or S4U2Proxy requests.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 8 package krb5 version 1.14.6-alt1.M80P.1
3 May 201800:00
–altlinux
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities have been fixed in IBM Security Privileged Identity Manager Appliance.
17 Sep 201915:34
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in Kerberos affect Power Hardware Management Console (CVE-2017-11368, CVE-2017-7562)
22 Sep 202123:05
–ibm
IBM Security Bulletins		Security Bulletin: IBM Security Access Manager Appliance is affected by Kerberos vulnerabilities (CVE-2017-11368, CVE-2017-7562)
21 Aug 201819:51
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in krb5 affect PowerKVM
7 Jul 201800:08
–ibm
FreeBSD		krb5 -- Multiple vulnerabilities
14 Jul 201700:00
–freebsd
Tenable Nessus		Amazon Linux 2 : krb5 (ALAS-2018-1010)
11 May 201800:00
–nessus
Tenable Nessus		Amazon Linux AMI : krb5 (ALAS-2018-1010)
7 Sep 201800:00
–nessus
Tenable Nessus		CentOS 7 : krb5 (CESA-2018:0666)
27 Apr 201800:00
–nessus
Tenable Nessus		Debian DLA-1058-1 : krb5 security update
15 Aug 201700:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7aarch64krb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.aarch64.rpm
Red Hat Enterprise Linux7ppckrb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.ppc.rpm
Red Hat Enterprise Linux7ppc64krb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.ppc64.rpm
Red Hat Enterprise Linux7ppc64lekrb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390krb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.s390.rpm
Red Hat Enterprise Linux7s390xkrb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64krb5-debuginfo0:1.15.1-18.el7krb5-debuginfo-0:1.15.1-18.el7.x86_64.rpm
Red Hat Enterprise Linux7anykrb5-debuginfo0:1.15.1-18.el7.i686krb5-debuginfo-0:1.15.1-18.el7.i686.noarch.rpm
Red Hat Enterprise Linux7aarch64krb5-devel0:1.15.1-18.el7krb5-devel-0:1.15.1-18.el7.aarch64.rpm
Red Hat Enterprise Linux7ppckrb5-devel0:1.15.1-18.el7krb5-devel-0:1.15.1-18.el7.ppc.rpm
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13 May 2026 01:13Current
7.1High risk
Vulners AI Score7.1
CVSS 24
CVSS 36.5
EPSS0.00681
kerberoskrb5kdcS4U2SelfS4U2Proxydenial of service
3