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Date: Thu, 15 Oct 2015 10:08:26 +0200
From: Florian Weimer <fweimer@...hat.com>
To: oss-security@...ts.openwall.com
Cc: cve-assign@...re.org
Subject: Re: CVE Request: Glibc Pointer guarding weakness

On 09/05/2015 06:49 PM, Hector Marco-Gisbert wrote:
> Hello,
> 
> A weakness in the dynamic loader have been found, Glibc prior to 2.22.90
> are affected. The issue is that the LD_POINTER_GUARD in the environment
> is not sanitized allowing local attackers easily to bypass the pointer
> guarding protection on set-user-ID and set-group-ID programs.
> 
> 
> Details and PoC at:
> http://hmarco.org/bugs/glibc_ptr_mangle_weakness.html
> 
> 
> A patch is already sent to Glibc maintainers. This issue is similar to
> http://hmarco.org/bugs/CVE-2013-4788.html but now affect to dynamic
> linked applications.

> Could you please assign a CVE ?

Upstream commit:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=a014cecd82b71b70a6a843e250e06b541ad524f7

Florian

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