Secunia Security Advisory - Tavis Ormandy has reported multiple vulnerabilities in Sophos Anti-Virus, which can be exploited by malicious, local users to gain escalated privileges and by malicious people to conduct cross-site scripting attacks and compromise a user's system.
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TITLE:
Sophos Anti-Virus Multiple Vulnerabilities
SECUNIA ADVISORY ID:
SA51156
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/51156/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=51156
RELEASE DATE:
2012-11-07
DISCUSS ADVISORY:
http://secunia.com/advisories/51156/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/51156/
ONLY AVAILABLE IN CUSTOMER AREA:
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* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=51156
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION:
Tavis Ormandy has reported multiple vulnerabilities in Sophos
Anti-Virus, which can be exploited by malicious, local users to gain
escalated privileges and by malicious people to conduct cross-site
scripting attacks and compromise a user's system.
1) An integer overflow error when scanning a Visual Basic 6 compiled
file can be exploited to cause a heap-based buffer overflow.
2) Certain input is not properly sanitised within the Layered Service
Provider (LSP) block page before being returned to the user. This can
be exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.
3) An error when checking a compression algorithm within the
"CFFolder" structure can be exploited to cause a buffer overflow via
a specially crafted CAB archive.
4) An error within the VM_STANDARD byte-code opcode can be exploited
to corrupt memory via a specially crafted RAR archive.
5) An error due to the application setting insecure file system
permissions on the network update service directory can be exploited
to create update modules (e.g. DLL libraries), which will execute
with SYSTEM privileges.
6) An error when decrypting PDF revision 3 documents during scanning
can be exploited to cause a stack-based buffer overflow via a
specially crafted file.
Successful exploitation of vulnerabilities #1, #3, #4, and #6 may
allow execution of arbitrary code.
Please see the vendor's advisory for a list of affected versions.
SOLUTION:
Apply updates.
PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy
ORIGINAL ADVISORY:
Sophos:
http://www.sophos.com/en-us/support/knowledgebase/118424.aspx
Tavis Ormandy:
http://seclists.org/fulldisclosure/2012/Nov/31
https://lock.cmpxchg8b.com/sophailv2.pdf
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
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