NULL Pointer Dereference Affecting krb5 package, versions <1.12.1+dfsg-5


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    15.65% (96th percentile)

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  • Snyk ID SNYK-DEBIAN10-KRB5-395729
  • published 14 Aug 2014
  • disclosed 14 Aug 2014

How to fix?

Upgrade Debian:10 krb5 to version 1.12.1+dfsg-5 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 acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.

CVSS Scores

version 3.1
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Snyk

7.5 high
  • 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

4.3 medium