Improper Authentication Affecting krb5-libs package, versions <0:1.15.1-19.amzn2.0.1
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Test your applications- Snyk ID SNYK-AMZN2-KRB5LIBS-1662531
- published 27 Sep 2021
- disclosed 26 Jul 2018
Introduced: 26 Jul 2018
CVE-2017-7562 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2
krb5-libs
to version 0:1.15.1-19.amzn2.0.1 or higher.
This issue was patched in ALAS2-2018-1010
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream krb5-libs
package and not the krb5-libs
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2
relevant fixed versions and status.
An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.
References
- http://www.securityfocus.com/bid/100511
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562
- https://github.com/krb5/krb5/pull/694
- https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196
- https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2
- https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7562
- https://access.redhat.com/errata/RHSA-2018:0666
- https://access.redhat.com/security/cve/CVE-2017-7562
- https://bugzilla.redhat.com/show_bug.cgi?id=1485510