Upstream information

CVE-2017-7562 at MITRE

Description

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 4 6.3
Vector AV:N/AC:L/Au:S/C:N/I:P/A:N AV:N/AC:M/Au:S/C:N/I:C/A:N
Access Vector Network Network
Access Complexity Low Medium
Authentication Single Single
Confidentiality Impact None None
Integrity Impact Partial Complete
Availability Impact None None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.5 6.5
Vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Access Vector Network Network
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High High
Availability Impact None None
SUSE Bugzilla entries: 1055851 [NEW], 1056995 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Server 12 SP1-LTSS
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-SLE-SERVER-12-SP1-2018-983
SUSE Linux Enterprise Server 12-LTSS
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-SLE-SERVER-12-2018-983
SUSE Linux Enterprise Server for SAP Applications 12 SP1
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-SLE-SAP-12-SP1-2018-983
SUSE Linux Enterprise Server for SAP Applications 12 SP1-LTSS
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-SLE-SERVER-12-SP1-2018-983
SUSE Linux Enterprise Server for SAP Applications 12-LTSS
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-SLE-SERVER-12-2018-983
SUSE OpenStack Cloud 6
  • krb5 >= 1.12.1-38.5.3
  • krb5-32bit >= 1.12.1-38.5.3
  • krb5-client >= 1.12.1-38.5.3
  • krb5-doc >= 1.12.1-38.5.3
  • krb5-plugin-kdb-ldap >= 1.12.1-38.5.3
  • krb5-plugin-preauth-otp >= 1.12.1-38.5.3
  • krb5-plugin-preauth-pkinit >= 1.12.1-38.5.3
  • krb5-server >= 1.12.1-38.5.3
Patchnames:
SUSE-OpenStack-Cloud-6-2018-983


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
CaaS Platform 1.0 krb5 Already fixed
CaaS Platform 2.0 krb5 Already fixed
OpenStack Cloud Magnum Orchestration 7.0 krb5 Already fixed
SUSE Linux Enterprise Desktop 12 SP2 krb5 Already fixed
SUSE Linux Enterprise Desktop 12 SP3 krb5 Already fixed
SUSE Linux Enterprise SDK 11 SP4 krb5 Not affected
SUSE Linux Enterprise SDK 12 SP2 krb5 Already fixed
SUSE Linux Enterprise SDK 12 SP3 krb5 Already fixed
SUSE Linux Enterprise Server 11 SP3 LTSS krb5 Not affected
SUSE Linux Enterprise Server 11 SP4 krb5 Not affected
SUSE Linux Enterprise Server 12 GA LTSS krb5 Released
SUSE Linux Enterprise Server 12 SP1 LTSS krb5 Released
SUSE Linux Enterprise Server 12 SP2 krb5 Already fixed
SUSE Linux Enterprise Server 12 SP2 for Raspberry PI krb5 Already fixed
SUSE Linux Enterprise Server 12 SP3 krb5 Already fixed