Bug 1961505 (CVE-2021-29951) - CVE-2021-29951 Mozilla: Thunderbird Maintenance Service could have been started or stopped by domain users
Summary: CVE-2021-29951 Mozilla: Thunderbird Maintenance Service could have been start...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-29951
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-05-18 06:25 UTC by Doran Moppert
Modified: 2021-05-26 11:32 UTC (History)
5 users (show)

Fixed In Version: thunderbird 78.10.1
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Last Closed: 2021-05-26 11:32:42 UTC


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Description Doran Moppert 2021-05-18 06:25:31 UTC
The Maintenance Service granted SERVICE_START access to `BUILTIN|Users` which, in a domain network, grants normal remote users access to start or stop the service. This could be used to prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface in the maintenance service.

*Note: This issue only affected Windows operating systems older than Win 10 build 1709. Other operating systems are unaffected.*



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-19/#CVE-2021-29951

Comment 1 Product Security DevOps Team 2021-05-26 11:32:42 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-29951


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