Re: ZDI-12-185 : Apple Mac OS X DirectoryService SwapProxyMessage Unchecked objOffset Remote Code Execution Vulnerability

[Jeffrey Walton <noloader () gmail com>]

A year to fix a validation bug? Jesus Christ....

On Thu, Nov 15, 2012 at 9:26 AM, ZDI Disclosures
<zdi-disclosures () tippingpoint com> wrote:
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> ZDI-12-185 : Apple Mac OS X  DirectoryService SwapProxyMessage Unchecked
> objOffset Remote Code Execution Vulnerability
>
> http://www.zerodayinitiative.com/advisories/ZDI-12-185
>
> November 15, 2012
>
> - -- CVE ID:
> CVE-2012-0650
>
> - -- CVSS:
> 10, AV:N/AC:L/Au:N/C:C/I:C/A:C
>
> - -- Affected Vendors:
> Apple
>
> - -- Affected Products:
> Apple OS X
>
> - -- Vulnerability Details:
> This vulnerability allows remote attackers to execute arbitrary code on
> vulnerable installations of Apple Mac OSX. Authentication is not required
> to exploit this vulnerability.
>
> The flaw exists within the DirectoryService daemon. This process listens on
> TCP port 625 by default on Mac OSX Server pre 10.7. Request types to the
> service include a sComProxyData structure having a translate field which is
> responsible for describing the endianness of the payload. When passing a
> message to SwapProxyMessage for byte-reordering, multiple user controlled
> fields are trusted including lengths and offsets. When processing this data
> with DSSwapObjectData, the process will address memory out of the bounds of
> the allocated region. A remote attacker can exploit this vulnerability to
> execute arbitrary code under the context of the process.
>
> - -- Vendor Response:
> Apple has issued an update to correct this vulnerability. More details can
> be found at:
> http://support.apple.com/kb/HT1222
>
> - -- Disclosure Timeline:
> 2011-11-29 - Vulnerability reported to vendor
> 2012-11-15 - Coordinated public release of advisory
>
>
> - -- Credit:
> This vulnerability was discovered by:
> * aazubel
> [SNIP]

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