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TITLE:
Cisco ASA 5500 Series Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA42931

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42931/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42931

RELEASE DATE:
2011-01-18

DISCUSS ADVISORY:
http://secunia.com/advisories/42931/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/42931/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=42931

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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
Multiple vulnerabilities have been reported in Cisco ASA (Adaptive
Security Appliance) 5500 Series, which can be exploited by malicious
users and malicious people to bypass certain security restrictions
and by malicious people to cause a DoS (Denial of Service).

1) An error when handling EIGRP multicast traffic can be exploited to
exhaust certain system resources.

2) An error when handling TELNET connections can be exploited to
bypass certain access restrictions by connecting to the lowest
security level interface.

Successful exploitation of this vulnerability requires valid
credentials.

3) An error when handling unspecified IPSEC traffic can be exploited
to cause a device to crash via a high volume of traffic.

4) An error in emWEB when handling filename requests can be exploited
to crash the daemon by requesting a filename containing white space
characters.

5) An error when handling packets during device startup can be
exploited to bypass configured access restrictions.

6) An error when handling Online Certificate Status Protocol (OCSP)
connection failures can be exploited by OCSP responders to exhaust
TCP sockets by rejecting connection attempts.

7) An error in the WebVPN implementation when handling CIFS
connections can be exploited to access a share via certain CIFS
requests.

Successful exploitation of this vulnerability requires valid
credentials and CIFS file browsing to be disabled.

8) An error within SMTP inspection can be exploited to bypass the
inspection via prepended space characters.

9) An error when handling LDAP connections can be exploited to
exhaust memory resources via invalid authentication attempts.

10) An error within SIP inspection can be exploited to crash a device
via a high volume of calls (greater than 600).

11) An error in the Mobile User Security (MUS) service when handling
HTTP requests from a Web Security Appliance (WSA) can be exploited to
bypass authentication via a HEAD request.

12) An error when handling unspecified multicast traffic can be
exploited to crash a device.

13) An error when handling LAN-to-LAN (L2L) IPSEC sessions can be
exploited to crash a device via a high volume of sessions (greater
than 10000).

The vulnerabilities are reported in versions prior to 8.2(4) and
8.3(2).

SOLUTION:
Update to versions 8.2(4) and 8.3(2).

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.cisco.com/en/US/docs/security/asa/asa82/release/notes/asarn82.html
http://www.cisco.com/en/US/docs/security/asa/asa83/release/notes/asarn83.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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vulnerabilities.

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