Description
The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.
CVSS Metrics
- Vector
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- network
- Access Cmplx
- medium
- Auth
- none
- Confidentiality
- partial
- Integrity
- partial
- Availability
- none
- Weaknesses
- CWE-264
Metadata
- Primary Vendor
- MIT
- Published
- 5/25/2015
- Last Modified
- 4/12/2025
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
mit : kerberos_5mit : kerberos_5mit : kerberos_5mit : kerberos_5mit : kerberos_5mit : kerberos_5
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