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atlassianSecurity-metrics-botCONFSERVER-59733
HistoryApr 16, 2020 - 8:37 p.m.

Protection Mechanism Failure in file downloading in Companion - CVE-2020-4020

2020-04-1620:37:58
security-metrics-bot
jira.atlassian.com
9

CVSS2

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.006

Percentile

79.1%

The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure.

h5. Acknowledgements
Credit for finding this vulnerability goes to Johannes Hatting (UFST).

Affected configurations

Vulners
Node
atlassianconfluence_data_centerRangeCompanion-Legacy
OR
atlassianconfluence_data_centerRange<7.3.1
VendorProductVersionCPE
atlassianconfluence_data_center*cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*

CVSS2

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.006

Percentile

79.1%

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