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Vulnerability of SquirrelMail: Cross Site Scripting

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting of SquirrelMail, in order to run JavaScript code in the context of the web site.
Impacted systems: Debian, Fedora.
Severity of this alert: 2/4.
Number of vulnerabilities in this bulletin: 6.
Creation date: 31/08/2018.
Références of this alert: CVE-2018-14950, CVE-2018-14951, CVE-2018-14952, CVE-2018-14953, CVE-2018-14954, CVE-2018-14955, DLA-1484-1, FEDORA-2019-1a87523729, FEDORA-2019-ad02f64a79, VIGILANCE-VUL-27119.

Description of the vulnerability 

The SquirrelMail product offers a web service.

However, it does not filter received data before inserting them in generated HTML documents.

An attacker can therefore trigger a Cross Site Scripting of SquirrelMail, in order to run JavaScript code in the context of the web site.
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This computer weakness announce impacts software or systems such as Debian, Fedora.

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

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

This bulletin is about 6 vulnerabilities.

An attacker with a expert ability can exploit this vulnerability.

Solutions for this threat 

Debian 8: new squirrelmail packages.
New packages are available:
  Debian 8: squirrelmail 2:1.4.23~svn20120406-2+deb8u3

Fedora: new squirrelmail packages.
New packages are available:
  Fedora 29: squirrelmail 1.4.23-1.fc29.20190710
  Fedora 30: squirrelmail 1.4.23-1.fc30.20190710
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