Medium severity · published Aug 9, 2017
CVE-2017-11368
In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests
6.5
CVSS
2.4%
EPSS
No
On KEV
Description
In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
25; 26 · source: NVD
KE
Kerberos · Mit
5-1.13.7 · source: NVD
K5
Kerberos 5 · Mit
1.7; 1.7.1; 1.8; 1.8.1; 1.8.2; 1.8.3; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-11368
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-11368
Third Party Advisory
http://www.securityfocus.com/bid/100291
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:0666
Patch
https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W/
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