Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034)

                							

                <!--X-Body-Begin-->
<!--X-User-Header-->

oss-sec
mailing list archives
<!--X-User-Header-End-->
<!--X-TopPNI-->

By Date

By Thread

</form>

<!--X-TopPNI-End-->
<!--X-MsgBody-->
<!--X-Subject-Header-Begin-->
Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034)

<!--X-Subject-Header-End-->
<!--X-Head-of-Message-->

From: Dominik Czarnota &lt;dominik.b.czarnota () gmail com&gt;

Date: Wed, 26 Jan 2022 13:54:45 +0100

<!--X-Head-of-Message-End-->
<!--X-Head-Body-Sep-Begin-->

<!--X-Head-Body-Sep-End-->
<!--X-Body-of-Message-->
Hi,

And many other binaries also do things incorrectly:
- https://grep.app/search?q=%3D%201%3B%20n%20%3C%20argc
- https://grep.app/search?q=%3D%201%3B%20.%20%3C%20argc&amp;regexp=true

But most of them are not suid binaries and also do not perform a write into
argv[].

Cheers,
Disconnect3d

On Wed, 26 Jan 2022 at 13:52, Matthias Schmidt &lt;oss-sec () xosc org&gt; wrote:

Hi,

* Qualys Security Advisory wrote:

Qualys Security Advisory

pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034)

This was already mentioned in 2013 in a blog post, however, it seems the
author didn't realize the consequences of their finding:

https://ryiron.wordpress.com/2013/12/16/argv-silliness/

Cheers

        Matthias

<!--X-Body-of-Message-End-->
<!--X-MsgBody-End-->
<!--X-Follow-Ups-->

<!--X-Follow-Ups-End-->
<!--X-References-->
<!--X-References-End-->
<!--X-BotPNI-->

By Date

By Thread

Current thread:

pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Qualys Security Advisory (Jan 25)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Sam James (Jan 25)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Roman Medina-Heigl Hernandez (Jan 26)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Henri Salo (Jan 26)
Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Erik Auerswald (Jan 26)
Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Chris Boot (Jan 27)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Matthias Schmidt (Jan 26)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Dominik Czarnota (Jan 26)

Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Kai Lüke (Jan 27)
Re: pwnkit: Local Privilege Escalation in polkit's pkexec (CVE-2021-4034) Bastian Blank (Jan 27)

<!--X-BotPNI-End-->
<!--X-User-Footer-->
<!--X-User-Footer-End-->