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Access of Uninitialized Pointer Affecting krb5-libs package, versions <0:1.15.1-55.52.amzn1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.27% (68th percentile)
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NVD
6.5 medium
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SUSE
8.8 high
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Red Hat
6.5 medium

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  • Snyk ID SNYK-AMZN201803-KRB5LIBS-5889338
  • published 8 Sep 2023
  • disclosed 7 Aug 2023
Report a new vulnerability Found a mistake?

Introduced: 7 Aug 2023

CVE-2023-36054 Open this link in a new tab
CWE-824 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 krb5-libs to version 0:1.15.1-55.52.amzn1 or higher.
This issue was patched in ALAS-2023-1818.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-libs package and not the krb5-libs package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.