exploit the possibilities

Cisco Security Advisory 20160518-wsa3

Cisco Security Advisory 20160518-wsa3
Posted May 18, 2016
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in HTTP request parsing in Cisco AsyncOS for the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the proxy process unexpectedly restarts. The vulnerability occurs because the affected software does not properly allocate space for the HTTP header and any expected HTTP payload. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. An exploit could allow the attacker to cause a DoS condition when the proxy process unexpectedly reloads, which can cause traffic to be dropped. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, web, denial of service
systems | cisco
MD5 | 8226bcbc16a703150b3d935f27d1b7e7

Cisco Security Advisory 20160518-wsa3

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Cisco Web Security Appliance HTTP Length Denial of Service Vulnerability

Advisory ID: cisco-sa-20160518-wsa3

Revision 1.0

For Public Release 2016 May 18 16:00 UTC (GMT)

+---------------------------------------------------------------------

Summary
=======

A vulnerability in HTTP request parsing in Cisco AsyncOS for the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the proxy process unexpectedly restarts.

The vulnerability occurs because the affected software does not properly allocate space for the HTTP header and any expected HTTP payload. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. An exploit could allow the attacker to cause a DoS condition when the proxy process unexpectedly reloads, which can cause traffic to be dropped.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160518-wsa3

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (SunOS)
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=Jy8r
-----END PGP SIGNATURE-----

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

November 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Nov 1st
    28 Files
  • 2
    Nov 2nd
    1 Files
  • 3
    Nov 3rd
    1 Files
  • 4
    Nov 4th
    12 Files
  • 5
    Nov 5th
    19 Files
  • 6
    Nov 6th
    65 Files
  • 7
    Nov 7th
    22 Files
  • 8
    Nov 8th
    18 Files
  • 9
    Nov 9th
    1 Files
  • 10
    Nov 10th
    1 Files
  • 11
    Nov 11th
    11 Files
  • 12
    Nov 12th
    65 Files
  • 13
    Nov 13th
    27 Files
  • 14
    Nov 14th
    22 Files
  • 15
    Nov 15th
    18 Files
  • 16
    Nov 16th
    1 Files
  • 17
    Nov 17th
    3 Files
  • 18
    Nov 18th
    22 Files
  • 19
    Nov 19th
    17 Files
  • 20
    Nov 20th
    15 Files
  • 21
    Nov 21st
    13 Files
  • 22
    Nov 22nd
    0 Files
  • 23
    Nov 23rd
    0 Files
  • 24
    Nov 24th
    0 Files
  • 25
    Nov 25th
    0 Files
  • 26
    Nov 26th
    0 Files
  • 27
    Nov 27th
    0 Files
  • 28
    Nov 28th
    0 Files
  • 29
    Nov 29th
    0 Files
  • 30
    Nov 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close