First published: Mon May 25 2015(Updated: )
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.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
MIT Kerberos 5 | =1.12 | |
MIT Kerberos 5 | =1.12.1 | |
MIT Kerberos 5 | =1.12.2 | |
MIT Kerberos 5 | =1.12.3 | |
MIT Kerberos 5 | =1.13 | |
MIT Kerberos 5 | =1.13.1 |
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CVE-2015-2694 is considered a high severity vulnerability due to its potential to allow remote attackers to bypass preauthentication requirements.
To fix CVE-2015-2694, upgrade to MIT Kerberos 5 version 1.13.2 or later.
CVE-2015-2694 affects MIT Kerberos 5 versions 1.12.x and 1.13.x prior to 1.13.2.
CVE-2015-2694 enables remote attackers to bypass the intended preauthentication requirements.
Not all installations are vulnerable; only those running affected versions 1.12.x and 1.13.x before 1.13.2 are at risk.