MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2437-1 krb5 security update
Debian DSA Debian DSA DSA-4795-1 krb5 security update
EUVD EUVD EUVD-2020-20680 MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
Ubuntu USN Ubuntu USN USN-4635-1 Kerberos vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 03 Dec 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-12-03T18:15:34.180Z

Reserved: 2020-11-03T00:00:00.000Z

Link: CVE-2020-28196

cve-icon Vulnrichment

Updated: 2024-08-04T16:33:58.154Z

cve-icon NVD

Status : Modified

Published: 2020-11-06T08:15:13.860

Modified: 2025-12-03T19:15:52.130

Link: CVE-2020-28196

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-11-06T00:00:00Z

Links: CVE-2020-28196 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses