—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1
Cisco Web Security Appliance Range Request Denial of Service Vulnerability
Advisory ID: cisco-sa-20151104-wsa2
Revision 1.0
For Public Release 2015 November 4 16:00 UTC (GMT)
+———————————————————————
Summary
=======
A vulnerability in the file-range request functionality of Cisco AsyncOS
for Cisco Web Security Appliance (WSA) could allow an unauthenticated,
remote attacker to cause a denial of service (DoS) condition on an
appliance because the appliance runs out of system memory.
The vulnerability is due to a failure to free memory when a file range
is requested through the Cisco WSA. An attacker could exploit this
vulnerability by opening multiple connections that request file ranges
through the WSA. A successful exploit could allow the attacker to cause
the WSA to stop passing traffic when enough memory is used and not freed.
Cisco has released software updates that address this vulnerability.
A workaround that mitigates this vulnerability is also available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151104-wsa2
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1.4.5 (SunOS)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=TsjI
—–END PGP SIGNATURE—–
—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1
Cisco Web Security Appliance Cache Reply Denial of Service Vulnerability
Advisory ID: cisco-sa-20151104-wsa1
Revision 1.0
For Public Release 2015 November 4 16:00 UTC (GMT)
+———————————————————————
Summary
=======
A vulnerability in the proxy cache functionality of Cisco AsyncOS for
Cisco Web Security Appliance (WSA) could allow an unauthenticated,
remote attacker to cause a denial of service (DoS) condition because
the device runs out of system memory.
The vulnerability is due to improper memory operations by the affected
software. The software fails to free a memory object when it retrieves
data from the proxy server cache to terminate a TCP connection. An
attacker could exploit this vulnerability by opening many proxy
connections through the WSA. An exploit could allow the attacker to
cause the WSA to stop passing traffic when enough memory is leaked.
Cisco has released software updates that address this vulnerability.
A workaround that mitigates this vulnerability is also available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151104-wsa1
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1.4.5 (SunOS)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=jTdT
—–END PGP SIGNATURE—–
$downloadlink = get_field('download_link'); ?>