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AUSCERT External Security Bulletin Redistribution
ESB-2023.3849
USN-6210-1: Doorkeeper vulnerability
10 July 2023
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AusCERT Security Bulletin Summary
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Product: Doorkeeper
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-34246
Original Bulletin:
https://ubuntu.com/security/notices/USN-6210-1
Comment: CVSS (Max): 6.5 CVE-2023-34246 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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USN-6210-1: Doorkeeper vulnerability
7 July 2023
Doorkeeper could be made to expose sensitive information over the network.
Releases
o Ubuntu 23.04
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 ESM
o Ubuntu 16.04 ESM
Packages
o ruby-doorkeeper – OAuth 2 provider for Rails and Grape
Details
It was discovered that Doorkeeper incorrectly performed authorization checks
for public clients that have been previous approved. An attacker could
potentially exploit these in order to impersonate another user and obtain
sensitive information.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 23.04
o ruby-doorkeeper – 5.5.0-2ubuntu0.23.04.1
Ubuntu 22.10
o ruby-doorkeeper – 5.5.0-2ubuntu0.22.10.1
Ubuntu 22.04
o ruby-doorkeeper – 5.5.0-2ubuntu0.22.04.1
Ubuntu 20.04
o ruby-doorkeeper – 5.0.2-2ubuntu0.1
Ubuntu 18.04
o ruby-doorkeeper – 4.3.1-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 16.04
o ruby-doorkeeper – 2.2.1-1ubuntu0.1~esm1
Available with Ubuntu Pro
After a standard system update you need to restart any applications using
Doorkeeper to make all the necessary changes.
References
o CVE-2023-34246
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