CVE-2017-7562
Krb5 Authentication Bypass Vulnerability
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.
INFO
Published Date :
July 26, 2018, 3:29 p.m.
Last Modified :
Nov. 21, 2024, 3:32 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2017-7562
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the krb5 packages.
- Apply the latest security patches provided by your vendor.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-7562.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-7562 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-7562
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-7562 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-7562 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/100511 Added Reference https://access.redhat.com/errata/RHSA-2018:0666 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 Added Reference https://github.com/krb5/krb5/pull/694 Added Reference https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 Added Reference https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 Added Reference https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description An authentication bypass flaw was found in the way krb5's certauth interface 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. 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. Removed Reference https://access.redhat.com/security/cve/CVE-2017-7562 [No Types Assigned] Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1485510 [No Types Assigned] Added CWE Red Hat, Inc. CWE-295 Added CWE Red Hat, Inc. CWE-287 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed 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. An authentication bypass flaw was found in the way krb5's certauth interface 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. Added Reference https://access.redhat.com/security/cve/CVE-2017-7562 [No Types Assigned] Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1485510 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-295 Removed CWE Red Hat, Inc. CWE-287 -
Modified Analysis by [email protected]
Jan. 21, 2020
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Changed CPE Configuration OR *cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:* versions up to (excluding) 5-1.16.1 OR *cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* versions from (including) 1.0 up to (excluding) 1.16.1 -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CWE Red Hat, Inc. CWE-287 Added CWE Red Hat, Inc. CWE-295 -
Initial Analysis by [email protected]
Sep. 21, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:P/A:N) Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 No Types Assigned https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/100511 No Types Assigned http://www.securityfocus.com/bid/100511 Third Party Advisory, VDB Entry Changed Reference Type https://access.redhat.com/errata/RHSA-2018:0666 No Types Assigned https://access.redhat.com/errata/RHSA-2018:0666 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/krb5/krb5/pull/694 No Types Assigned https://github.com/krb5/krb5/pull/694 Patch, Third Party Advisory Changed Reference Type https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d No Types Assigned https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d Third Party Advisory Changed Reference Type https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 No Types Assigned https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 Third Party Advisory Added CWE CWE-287 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:* versions up to (excluding) 5-1.16.1 -
CVE Modified by [email protected]
Jul. 28, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:0666 [No Types Assigned] Added Reference http://www.securityfocus.com/bid/100511 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 6.5
Base CVSS Score: 6.5
Base CVSS Score: 4
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.26 }} -0.01%
score
0.48836
percentile