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Vulnerability of qmail-verify: information disclosure

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data of qmail-verify, in order to obtain sensitive information.
Vulnerable systems: Debian, Ubuntu.
Severity of this threat: 1/4.
Creation date: 25/05/2020.
Références of this weakness: CVE-2020-3812, DLA-2234-1, DSA-4692-1, USN-4556-1, USN-4621-1, VIGILANCE-VUL-32330.

Description of the vulnerability 

An attacker can bypass access restrictions to data of qmail-verify, in order to obtain sensitive information.
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This computer vulnerability announce impacts software or systems such as Debian, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity bulletin is low.

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

An attacker with a expert ability can exploit this threat alert.

Solutions for this threat 

Debian 8: new netqmail packages.
New packages are available:
  Debian 8: netqmail 1.06-6.2~deb8u1

Debian 9-10: new netqmail packages.
New packages are available:
  Debian 9: netqmail 1.06-6.2~deb9u1
  Debian 10: netqmail 1.06-6.2~deb10u1

Ubuntu 20.04: new netqmail packages.
New packages are available:
  Ubuntu 20.04 LTS: qmail 1.06-6.2~deb10u1build0.20.04.1

Ubuntu: new netqmail packages.
New packages are available:
  Ubuntu 18.04 LTS: qmail 1.06-6.2~deb10u1build0.18.04.1
  Ubuntu 16.04 LTS: qmail 1.06-6.2~deb10u1build0.16.04.1
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