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Bug #9803

Bug #9801: krb5: Ignore password attributes for S4U2Self requests (CVE-2018-20217)

[3.8] krb5: Ignore password attributes for S4U2Self requests (CVE-2018-20217)

Added by Alicha CH 28 days ago. Updated 15 days ago.

Status:
Closed
Priority:
Normal
Assignee:
Category:
Security
Target version:
Start date:
12/27/2018
Due date:
% Done:

100%

Estimated time:
Affected versions:
Security IDs:
CVE-2018-20217

Description

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

Associated revisions

Revision 7972b2ef (diff)
Added by Leonardo Arena 17 days ago

main/krb5: upgrade to 1.15.4, security fix for CVE-2018-20217

Fixes #9803

History

#1 Updated by Anonymous 17 days ago

  • Status changed from New to Resolved
  • % Done changed from 0 to 100

#2 Updated by Alicha CH 15 days ago

  • Project changed from Alpine Security to Alpine Linux
  • Category set to Security
  • Status changed from Resolved to Closed

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