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Vulnerability of MIT krb5: assertion error via Old Encryption S4U2Self Request

Synthesis of the vulnerability 

An attacker can force an assertion error via Old Encryption S4U2Self Request of MIT krb5, in order to trigger a denial of service.
Vulnerable software: Debian, Fedora, Juniper SBR, MIT krb5, openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.
Severity of this announce: 2/4.
Creation date: 27/12/2018.
Références of this computer vulnerability: bulletinjan2019, CVE-2018-20217, DLA-1643-1, FEDORA-2018-7db7ccda4d, FEDORA-2019-ac7e19b0c8, JSA11074, openSUSE-SU-2019:0063-1, openSUSE-SU-2019:0085-1, SUSE-SU-2019:0111-1, SUSE-SU-2019:0113-1, VIGILANCE-VUL-28099.

Description of the vulnerability 

An attacker can force an assertion error via Old Encryption S4U2Self Request of MIT krb5, in order to trigger a denial of service.
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This computer threat bulletin impacts software or systems such as Debian, Fedora, Juniper SBR, MIT krb5, openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this security threat is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this computer vulnerability alert.

Solutions for this threat 

MIT krb5: version 1.16.3.
The version 1.16.3 is fixed:
  https://kerberos.org/dist/

MIT krb5: version 1.15.5.
The version 1.15.5 is fixed:
  https://kerberos.org/dist/

MIT krb5: patch for Old Encryption S4U2Self Request.
A patch is available:
  https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086.patch

Debian 8: new krb5 packages.
New packages are available:
  Debian 8: krb5 1.12.1+dfsg-19+deb8u5

Fedora: new krb5 packages.
New packages are available:
  Fedora 28: krb5 1.16.1-24.fc28
  Fedora 29: krb5 1.16.1-22.fc29

Juniper Networks SBR Carrier: fixed versions for Third-party Software.
Fixed versions are indicated in information sources.

openSUSE Leap 15.0: new krb5 packages.
New packages are available:
  openSUSE Leap 15.0: krb5 1.15.2-lp150.5.3.1

openSUSE Leap 42.3: new krb5 packages.
New packages are available:
  openSUSE Leap 42.3: krb5 1.12.5-22.1

Oracle Solaris: patch for third party software of January 2019 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

SUSE LE 12: new krb5 packages.
New packages are available:
  SUSE LE 12 RTM: krb5 1.12.1-38.13.2
  SUSE LE 12 SP1: krb5 1.12.1-38.13.2
  SUSE LE 12 SP2: krb5 1.12.5-40.31.1
  SUSE LE 12 SP3: krb5 1.12.5-40.31.1
  SUSE LE 12 SP4: krb5 1.12.5-40.31.1

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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