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Vulnerability of Zope: SQL injection via DTML Connection Objects

Synthesis of the vulnerability 

An attacker can use a SQL injection via DTML Connection Objects of Zope, in order to read or alter data.
Vulnerable systems: Zope.
Severity of this threat: 2/4.
Creation date: 12/02/2020.
Références of this weakness: CVE-2020-7939, VIGILANCE-VUL-31592.

Description of the vulnerability 

An attacker can use a SQL injection via DTML Connection Objects of Zope, in order to read or alter data.
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This vulnerability alert impacts software or systems such as Zope.

Our Vigil@nce team determined that the severity of this computer weakness alert is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this computer vulnerability.

Solutions for this threat 

Zope: version 4.2.
The version 4.2 is fixed:
  https://github.com/zopefoundation/Zope/releases

Zope: version 2.13.30.
The version 2.13.30 is fixed:
  https://github.com/zopefoundation/Zope/releases

Zope: hotfix 20200121.
A patch is available:
  https://plone.org/security/hotfix/20200121
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