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Vulnerability of Sympa: privilege escalation via sympa_newaliases-wrapper

Synthesis of the vulnerability 

An attacker can bypass restrictions via sympa_newaliases-wrapper of Sympa, in order to escalate his privileges.
Impacted products: Debian.
Severity of this bulletin: 1/4.
Creation date: 09/11/2020.
Références of this threat: CVE-2020-26880, DLA-2441-1, VIGILANCE-VUL-33855.

Description of the vulnerability 

An attacker can bypass restrictions via sympa_newaliases-wrapper of Sympa, in order to escalate his privileges.
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This vulnerability announce impacts software or systems such as Debian.

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

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

An attacker with a expert ability can exploit this computer threat bulletin.

Solutions for this threat 

Debian 9: new sympa packages.
New packages are available:
  Debian 9: sympa 6.2.16~dfsg-3+deb9u4
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