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CVE-2017-7562

MEDIUM

6.5

Description

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published7/26/2018

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

mit:kerberos_5redhat:enterprise_linuxredhat:enterprise_linux_desktopredhat:enterprise_linux_serverredhat:enterprise_linux_workstation

Weaknesses (CWE)

CWE-287CWE-295CWE-287

References

http://www.securityfocus.com/bid/100511(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2018:0666(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562(secalert@redhat.com)

https://github.com/krb5/krb5/pull/694(secalert@redhat.com)

https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196(secalert@redhat.com)

https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2(secalert@redhat.com)

https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d(secalert@redhat.com)

http://www.securityfocus.com/bid/100511(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:0666(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/krb5/krb5/pull/694(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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