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Date: Fri, 18 Feb 2022 11:19:27 -0800
From: Alan Coopersmith <alan.coopersmith@...cle.com>
To: oss-security@...ts.openwall.com, Devon Thompson <devthomp@...hat.com>
Cc: jrybar@...hat.com, gsuckevi@...hat.com
Subject: Re: CVE-2021-4115: polkit: file descriptor leak allows
an unprivileged user to cause a crash.
On 2/17/22 13:35, Devon Thompson wrote:
> Description:
> There is an error handing flaw in polkit which can allow an unprivileged user to
> cause polkit to crash.
> The crash happens due to process file descriptor exhaustion.
> NOTE: Polkit process outage duration is tied to the failing process being reaped
> and a new one being spawned.
A more detailed description has been posted at
https://securitylab.github.com/advisories/GHSL-2021-077-polkit/
> References:
> https://access.redhat.com/security/cve/cve-2021-4115
> https://bugzilla.redhat.com/show_bug.cgi?id=2054127
> https://pkgs.devel.redhat.com/cgit/rpms/polkit/commit/?h=rhel-8.6.0&id=a71b0b5bb6624858a16bfbc1e721757b243709c6
That last hostname does not resolve (perhaps it's internal to Red Hat?).
I'm surprised these are all Red Hat URL's - was this not reported & fixed
upstream? I see a query asking about that at
https://gitlab.freedesktop.org/polkit/polkit/-/issues/170 but no response,
and no commit or merge request yet there.
--
-Alan Coopersmith- alan.coopersmith@...cle.com
Oracle Solaris Engineering - https://blogs.oracle.com/solaris
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