APP: MIT Kerberos 5 Read Message Data Denial of Service
This signature detects attempts to exploit a known vulnerability against MIT Kerberos. A successful exploit can lead to Denial of Service.
Extended Description
MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.
Affected Products
Mit kerberos_5
References
CVE: CVE-2014-5355
Short Name
APP:KERBEROS:READ-MSG-DOS
Severity
Minor
Recommended
True
Recommended Action
Drop
Category
APP
Keywords
5 CVE-2014-5355 Data Denial Kerberos MIT Message Read Service of
Release Date
03/25/2015
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3761
Port
TCP/543,544,754
False Positive
Unknown
Vendors
Mit
CVSS Score
5.0