Bug 1595404 (CVE-2018-1116) - CVE-2018-1116 polkit: Improper authorization in polkit_backend_interactive_authority_check_authorization function in polkitd
Summary: CVE-2018-1116 polkit: Improper authorization in polkit_backend_interactive_au...
Alias: CVE-2018-1116
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1599790 1599791 1601411 1829563 1831063
Blocks: 1595405
TreeView+ depends on / blocked
Reported: 2018-06-26 20:45 UTC by Laura Pardo
Modified: 2020-05-04 14:42 UTC (History)
3 users (show)

Fixed In Version: polkit 0.116
Doc Type: If docs needed, set a value
Doc Text:
It was found that Polkit's CheckAuthorization and RegisterAuthenticationAgent D-Bus calls did not validate the client provided UID. A specially crafted program could use this flaw to submit arbitrary UIDs, triggering various denial of service or minor disclosures, such as which authentication is cached in the victim's session.
Clone Of:
Last Closed: 2020-03-31 22:32:37 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1135 0 None None None 2020-03-31 19:27:07 UTC

Description Laura Pardo 2018-06-26 20:45:29 UTC
A flaw was found in polkit. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure.

Comment 1 Cedric Buissart 2018-07-10 15:21:00 UTC
Upstream fix:

Comment 2 Cedric Buissart 2018-07-10 15:21:22 UTC
Created polkit tracking bugs for this issue:

Affects: fedora-all [bug 1599790]

Comment 5 errata-xmlrpc 2020-03-31 19:27:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1135 https://access.redhat.com/errata/RHSA-2020:1135

Comment 6 Product Security DevOps Team 2020-03-31 22:32:37 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


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