[3.7] krb5: Ignore password attributes for S4U2Self requests (CVE-2018-20217)
A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5
(aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket
using
an older encryption type (single-DES, triple-DES, or RC4), the attacker
can crash the KDC by making an S4U2Self request.
References:
https://nvd.nist.gov/vuln/detail/CVE-2018-20217
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763
Patch:
https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086
(from redmine: issue id 9804, created on 2018-12-27, closed on 2019-01-09)
- Relations:
- parent #9801 (closed)
- Changesets:
- Revision 5cfdd452 on 2019-01-07T08:03:07Z:
main/krb5: upgrade to 1.15.4, security fix for CVE-2018-20217
Fixes #9804
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