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CVE-2019-11580

Atlassian — Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability

Atlassian · Remote code execution · in CISA KEV since 2021-11-03

ExigentKEV since 2021 · listed over a yearRansomwareCISA KEVActively Exploited
92

EVRS 92 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 104 of 2,960 tracked

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Why it scores 92

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

crowd: update to 3.0.5 or later | crowd: update to 3.1.6 or later | crowd: update to 3.2.8 or later | crowd: update to 3.3.5 or later | crowd: update to 3.4.4 or later

Affected versions

  • crowd>= 2.1.0 < 3.0.5>= 3.1.0 < 3.1.6>= 3.2.0 < 3.2.8>= 3.3.0 < 3.3.5>= 3.4.0 < 3.4.4

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.954 (99.87th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-05-03 · KEV since 2021 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by atlassian. Listed ENISA EUVD

Description

NVD

Atlassian Crowd and Crowd Data Center had the pdkinstall development plugin incorrectly enabled in release builds. Attackers who can send unauthenticated or authenticated requests to a Crowd or Crowd Data Center instance can exploit this vulnerability to install arbitrary plugins, which permits remote code execution on systems running a vulnerable version of Crowd or Crowd Data Center. All versions of Crowd from version 2.1.0 before 3.0.5 (the fixed version for 3.0.x), from version 3.1.0 before 3.1.6 (the fixed version for 3.1.x), from version 3.2.0 before 3.2.8 (the fixed version for 3.2.x), from version 3.3.0 before 3.3.5 (the fixed version for 3.3.x), and from version 3.4.0 before 3.4.4 (the fixed version for 3.4.x) are affected by this vulnerability.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: Atlassian Crowd pdkinstall Unauthenticated Plugin Upload RCE (multi/http/atlassian_crowd_pdkinstall_plugin_upload_rce). A module existing is not the same as active exploitation; see metasploit.com.