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Out-of-Bounds Affecting krb5 package, versions <1.15.3-r0

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 2.06% (89th percentile)
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NVD
9.8 critical
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Red Hat
7.1 high

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  • Snyk ID SNYK-ALPINE312-KRB5-588880
  • published 23 Nov 2017
  • disclosed 23 Nov 2017
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Introduced: 23 Nov 2017

CVE-2017-15088 Open this link in a new tab
CWE-119 Open this link in a new tab
CWE-121 Open this link in a new tab

How to fix?

Upgrade Alpine:3.12 krb5 to version 1.15.3-r0 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 Alpine. See How to fix? for Alpine:3.12 relevant fixed versions and status.

plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.