[squid-dev] CVE-2019-12522

[Eliezer Croitoru]

I'm still trying to understand why it's described as "exploitable" ???
It's like saying: The Linux Kernel should not be a kernel and init(or
equivalent) should not run with uid 0 or 1.
Why nobody complains about cockpit being a root process??

Thanks,
Eliezer

----
Eliezer Croitoru
NgTech, Tech Support
Mobile: +972-5-28704261
Email: ngtech1ltd at gmail.com

-----Original Message-----
From: squid-dev <squid-dev-bounces at lists.squid-cache.org> On Behalf Of Amos
Jeffries
Sent: Thursday, March 3, 2022 09:17
To: squid-dev at lists.squid-cache.org
Subject: Re: [squid-dev] CVE-2019-12522

On 2/03/22 05:35, Adam Majer wrote:
> Hi all,
> 
> There apparently was a CVE assigned some time ago but I cannot seem to 
> find it being addressed.
> 
>
https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-125
22.txt 
> 
> 
> The crux of the problem is that privileges are not dropped and could be 
> re-acquired. There is even a warning against running squid as root but 
> if root is one function call away, it seems it's the same.
> 
> Any thoughts on this?
> 


To quote myself:

"
We do not have an ETA on this issue. Risk is relatively low and several
features of Squid require the capability this allows in order to
reconfigure. So we will not be implementing the quick fix of fully
dropping root.
"

If anyone wants to work on it you can seek out any/all calls to 
enter_suid and see if they can be removed yet. Some may be able to go 
immediately, and some may need replacing with modern libcap capabilities.


HTH
Amos
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