Signature Detail
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Short Name |
APP:KERBEROS:SPNEGO-5-DOS |
|---|---|
Severity |
Major |
Recommended |
No |
Recommended Action |
Drop |
Category |
APP |
Keywords |
MIT Kerberos 5 SPNEGO Denial of Service |
Release Date |
2014/08/19 |
Update Number |
2409 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
APP: MIT Kerberos 5 SPNEGO Denial of Service
This signature detects attempts to exploit a known vulnerability against MIT Kerberos 5. A successful attack can result in a denial-of-service condition.
Extended Description
The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.
Affected Products
- Debian debian_linux 7.0
- Mit kerberos_5 1.10
- Mit kerberos_5 1.10.1
- Mit kerberos_5 1.10.2
- Mit kerberos_5 1.10.3
- Mit kerberos_5 1.10.4
- Mit kerberos_5 1.11
- Mit kerberos_5 1.11.1
- Mit kerberos_5 1.11.2
- Mit kerberos_5 1.11.3
- Mit kerberos_5 1.11.4
- Mit kerberos_5 1.11.5
- Mit kerberos_5 1.12
- Mit kerberos_5 1.12.1
- Redhat enterprise_linux_desktop 7.0
- Redhat enterprise_linux_hpc_node 7.0
- Redhat enterprise_linux_server 7.0
- Redhat enterprise_linux_workstation 7.0
References
- CVE: CVE-2014-4344