what you don't know can hurt you

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-----
Login or Register to add favorites

File Archive:

September 2020

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close