Signature Detail
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Short Name |
APP:KERBEROS:KDC-AUTH-DOS-1 |
|---|---|
Severity |
Minor |
Recommended |
No |
Category |
APP |
Keywords |
MIT Kerberos KDC Authentication Denial of Service (1) |
Release Date |
2019/07/24 |
Update Number |
3192 |
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 KDC Authentication Denial of Service (1)
This signature detects attempts to exploit a known denial of service vulnerability in MIT's Kerberos KDC. It is due to an assertion failure when handling invalid Authentication Service requests. Remote unauthenticated attackers can exploit this by sending a crafted AS-REQ packet to the target KDC, causing it to crash, creating a denial-of-service condition.
Extended Description
Double free vulnerability in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7.x and 1.8.x before 1.8.2 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a request associated with (1) renewal or (2) validation.
Affected Products
- Mit kerberos_5 1.7
- Mit kerberos_5 1.7.1
- Mit kerberos_5 1.8
- Mit kerberos_5 1.8.1
References
- CVE: CVE-2010-1320