CVE-2021-32739
Icinga API Cross-Site Scripting and Privilege Escalation
Description
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. From version 2.4.0 through version 2.12.4, a vulnerability exists that may allow privilege escalation for authenticated API users. With a read-ony user's credentials, an attacker can view most attributes of all config objects including `ticket_salt` of `ApiListener`. This salt is enough to compute a ticket for every possible common name (CN). A ticket, the master node's certificate, and a self-signed certificate are enough to successfully request the desired certificate from Icinga. That certificate may in turn be used to steal an endpoint or API user's identity. Versions 2.12.5 and 2.11.10 both contain a fix the vulnerability. As a workaround, one may either specify queryable types explicitly or filter out ApiListener objects.
INFO
Published Date :
July 15, 2021, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 6:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
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-2021-32739.
| URL | Resource |
|---|---|
| https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 | Exploit Third Party Advisory |
| https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ | Broken Link Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html | Mailing List Third Party Advisory |
| https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 | Exploit Third Party Advisory |
| https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ | Broken Link Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html | Mailing List Third Party Advisory |
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-2021-32739 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32739 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 https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 Added Reference https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ Added Reference https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Dec. 03, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 11, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 03, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 No Types Assigned https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 Exploit, Third Party Advisory Changed Reference Type https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ No Types Assigned https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ Broken Link, Vendor Advisory Added CWE NIST CWE-269 Added CPE Configuration OR *cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (excluding) 2.11.10 *cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:* versions from (including) 2.12.0 up to (excluding) 2.12.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32739 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-2021-32739
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.36 }} -0.22%
score
0.72017
percentile