CVE-2021-26556

High

Description

When Octopus Server is installed using a custom folder location, folder ACLs are not set correctly and could lead to an unprivileged user using DLL side-loading to gain privileged access.

SeverityHigh
CVSS7.8
Exploit probability—
ProductOctopus Deploy
PublishedOct 7, 2021
First seenOct 7, 2021

How to fix

Update
  • octopus octopus_deploy2020.4.229 or later
  • octopus octopus_server2020.5.256 or later

Affected products

ProductAffected versionsFixed in
octopus octopus_deploy0.9 ≤ v < 2020.4.2292020.4.229
octopus octopus_server2020.5.0 ≤ v < 2020.5.2562020.5.256

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CVE-2021-26556 · Octopus Deploy · Dark Radar