Improper Input Validation Affecting krb5 package, versions <1.10+dfsg~alpha1-1


Severity

low

    Threat Intelligence

    EPSS
    70.7% (99th percentile)

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  • Snyk ID SNYK-DEBIAN10-KRB5-396191
  • published 20 Oct 2011
  • disclosed 20 Oct 2011

How to fix?

Upgrade Debian:10 krb5 to version 1.10+dfsg~alpha1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.

CVSS Scores

version 3.1
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Snyk

7.5 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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NVD

7.5 high
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Red Hat

5.3 medium