| Vulnerability Name: | CVE-2021-32739 (CCN-205587) | ||||||||||||||||||||||||||||||||||||||||||||
| Assigned: | 2021-07-15 | ||||||||||||||||||||||||||||||||||||||||||||
| Published: | 2021-07-15 | ||||||||||||||||||||||||||||||||||||||||||||
| Updated: | 2021-12-03 | ||||||||||||||||||||||||||||||||||||||||||||
| Summary: | 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. | ||||||||||||||||||||||||||||||||||||||||||||
| CVSS v3 Severity: | 8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) 7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
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| Vulnerability Type: | CWE-267 | ||||||||||||||||||||||||||||||||||||||||||||
| Vulnerability Consequences: | Gain Privileges | ||||||||||||||||||||||||||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-32739 Source: XF Type: UNKNOWN icinga-cve202132739-priv-esc(205587) Source: CCN Type: Icinga GIT Repository Results of queries for ApiListener objects include the ticket salt which allows in turn to steal (more privileged) identities Source: CONFIRM Type: Exploit, Third Party Advisory https://github.com/Icinga/icinga2/security/advisories/GHSA-98wp-jc6q-x5q5 Source: MISC Type: Broken Link, Vendor Advisory https://icinga.com/blog/2021/07/02/releasing-icinga-2-12-5-2-11-10/ Source: MLIST Type: Mailing List, Third Party Advisory [debian-lts-announce] 20211110 [SECURITY] [DLA 2816-1] icinga2 security update | ||||||||||||||||||||||||||||||||||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration 2: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||||||||||||||||||||||||||||||||||
| Oval Definitions | |||||||||||||||||||||||||||||||||||||||||||||
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