ZDI-12-018 : Symantec PCAnywhere awhost32 Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

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ZDI-12-018 : Symantec PCAnywhere awhost32 Remote Code Execution
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-018
January 25, 2012

- -- CVE ID:
CVE-2011-3478

- -- CVSS:
9.7, AV:N/AC:L/Au:N/C:C/I:C/A:P

- -- Affected Vendors:

Symantec



- -- Affected Products:

Symantec PCAnywhere



- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Symantec PCAnywhere. Authentication is not
required to exploit this vulnerability.

The flaw exists within the awhost32 component which is used when
handling incoming connections. This process listens on TCP port 5631.
When handling an authentication request the process copies the user
supplied username unsafely to a fixed-length buffer of size 0x108. A
remote attacker can exploit this vulnerability to execute arbitrary code
under the context of the SYSTEM account.


- -- Vendor Response:

Symantec has issued an update to correct this vulnerability. More
details can be found at:

http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120124_00




- -- Disclosure Timeline:
2011-08-16 - Vulnerability reported to vendor

2012-01-25 - Coordinated public release of advisory



- -- Credit:
This vulnerability was discovered by:

* Tal zeltzer



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