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AUSCERT External Security Bulletin Redistribution
ESB-2017.2257
Clientside Validation - Critical - Arbitary PHP Execution -
DRUPAL-SA-CONTRIB-2017-072
7 September 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Drupal
Publisher: Drupal Security Team
Operating System: Windows
UNIX specific
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Original Bulletin:
https://www.drupal.org/node/2907118
https://www.drupal.org/node/2907137
Comment: This bulletin contains two (2) Drupal Security Team security
advisories.
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Clientside Validation - Critical - Arbitary PHP Execution -
DRUPAL-SA-CONTRIB-2017-072
Posted by Drupal Security Team on 6 Sep 2017 at 17:20 UTC
Advisory ID: DRUPAL-SA-CONTRIB-2017-072
Project: Clientside Validation (third-party module)
Version: 7.x
Date: 2017-September-06
Security risk: 16/25 ( Critical)
AC:Basic/A:None/CI:Some/II:Some/E:Theoretical/TD:All
Vulnerability: Arbitrary PHP code execution
Description
The Clientside Validation module enables you to have clientside (Javascript)
validation on your forms.
The module does not sufficiently validate parameters of a POST request made
when validating a CAPTCHA.
For the 1.x version of this module, this vulnerability is mitigated by the
fact that the CAPTCHA module must be enabled and the 'validate captcha' option
of the Clientside Validation module must be enabled (this option is enabled by
default).
For the 2.x version of this module, this vulnerability is mitigated by the
fact that the CAPTCHA module must be enabled and the Clientside Validation
captcha submodule must be enabled.
CVE identifier(s) issued
A CVE identifier will be requested, and added upon issuance, in accordance
with Drupal Security Team processes.
Versions affected
Clientside Validation 7.x-1.x versions prior to 7.x-1.44.
Clientside Validation 7.x-2.x versions prior to 7.x-2.0-beta1.
Drupal core is not affected. If you do not use the contributed Clientside
Validation module, there is nothing you need to do.
Solution
Install the latest version:
If you use the 1.x version of Clientside Validation module for Drupal 7.x,
upgrade to Clientside Validation 7.x-1.45
If you use the 2.x version of Clientside Validation module for Drupal 7.x,
upgrade to Clientside Validation 7.x-2.0-beta2
Also see the Clientside Validation project page.
Reported by
Daniel-SCRT
Fixed by
Jelle Sebreghts the module maintainer
Coordinated by
Greg Knaddison of the Drupal Security Team
Contact and More Information
The Drupal security team can be reached at security at drupal.org or via the
contact form at https://www.drupal.org/contact.
Learn more about the Drupal Security team and their policies, writing secure
code for Drupal, and securing your site.
Follow the Drupal Security Team on Twitter at
https://twitter.com/drupalsecurity
Categories: Drupal 7.x
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CAPTCHA - Moderately Critical - Denial of Service - SA-CONTRIB-2017-073
Posted by Drupal Security Team on 6 Sep 2017 at 19:21 UTC
Advisory ID: DRUPAL-SA-CONTRIB-2017-073
Project: CAPTCHA (third-party module)
Version: 7.x
Date: 2017-September-06
Security risk: 10/25 ( Moderately Critical)
AC:Basic/A:None/CI:None/II:None/E:Proof/TD:Default
Vulnerability: Denial of Service
Description
This module enables you to use various techniques to block automated scripts /
robots from submitting content to a site, e.g. to block spam comments.
The module doesn't properly store the session ID of visitors who are given a
session which could lead to a Denial of Service attack.
This vulnerability is mitigated by the fact that Drupal does not give a
session to all visitors, especially when used with advanced caching systems
like Varnish.
CVE identifier(s) issued
A CVE identifier will be requested, and added upon issuance, in accordance
with Drupal Security Team processes.
Versions affected
CAPTCHA 7.x-1.x versions prior to 7.x-1.5.
Drupal core is not affected. If you do not use the contributed CAPTCHA module,
there is nothing you need to do.
Solution
Install the latest version:
If you use the CATPCHA module for Drupal 7.x, upgrade to CAPTCHA 7.x-1.5.
Also see the CAPTCHA project page.
Reported by
Nightwalker3000
Fixed by
Fabiano Sant'Ana, the module's maintainer.
Coordinated by
Lee Rowlands of the Drupal Security Team.
Damien McKenna of the Drupal Security Team.
Contact and More Information
The Drupal security team can be reached at security at drupal.org or via the
contact form at https://www.drupal.org/contact.
Learn more about the Drupal Security team and their policies, writing secure
code for Drupal, and securing your site.
Follow the Drupal Security Team on Twitter at
https://twitter.com/drupalsecurity
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