Vulnerability Details : CVE-2020-36239
Jira Data Center, Jira Core Data Center, Jira Software Data Center from version 6.3.0 before 8.5.16, from 8.6.0 before 8.13.8, from 8.14.0 before 8.17.0 and Jira Service Management Data Center from version 2.0.2 before 4.5.16, from version 4.6.0 before 4.13.8, and from version 4.14.0 before 4.17.0 exposed a Ehcache RMI network service which attackers, who can connect to the service, on port 40001 and potentially 40011[0][1], could execute arbitrary code of their choice in Jira through deserialization due to a missing authentication vulnerability. While Atlassian strongly suggests restricting access to the Ehcache ports to only Data Center instances, fixed versions of Jira will now require a shared secret in order to allow access to the Ehcache service. [0] In Jira Data Center, Jira Core Data Center, and Jira Software Data Center versions prior to 7.13.1, the Ehcache object port can be randomly allocated. [1] In Jira Service Management Data Center versions prior to 3.16.1, the Ehcache object port can be randomly allocated.
Vulnerability category: Execute code
Products affected by CVE-2020-36239
- Atlassian » Jira Service Desk » Data Center EditionVersions from including (>=) 4.6.0 and before (<) 4.13.8cpe:2.3:a:atlassian:jira_service_desk:*:*:*:*:data_center:*:*:*
- Atlassian » Jira Service Desk » Data Center EditionVersions from including (>=) 2.0.2 and before (<) 4.5.16cpe:2.3:a:atlassian:jira_service_desk:*:*:*:*:data_center:*:*:*
- Atlassian » Jira Service Management » Data Center EditionVersions from including (>=) 4.14.0 and before (<) 4.17.0cpe:2.3:a:atlassian:jira_service_management:*:*:*:*:data_center:*:*:*
- cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-36239
1.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-36239
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-36239
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: security@atlassian.com (Secondary)
References for CVE-2020-36239
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https://confluence.atlassian.com/adminjiraserver/jira-data-center-and-jira-service-management-data-center-security-advisory-2021-07-21-1063571388.html
Jira Data Center And Jira Service Management Data Center Security Advisory 2021-07-21 | Administering Jira applications Data Center and Server 8.18 | Atlassian DocumentationPatch;Vendor Advisory
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https://jira.atlassian.com/browse/JSDSERVER-8454
[JSDSERVER-8454] Jira Data Center & Jira Service Management Data Center - Missing Authentication for Ehcache RMI - CVE-2020-36239 - Create and track feature requests for Atlassian products.Issue Tracking;Vendor Advisory
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https://jira.atlassian.com/browse/JRASERVER-72566
[JRASERVER-72566] Jira Data Center & Jira Service Management Data Center - Missing Authentication for Ehcache RMI - CVE-2020-36239 - Create and track feature requests for Atlassian products.Issue Tracking;Vendor Advisory
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