An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into
    any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing
    whether that address was subscribed in the first place. (CVE-2021-40347)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5157-1 advisory.

    It was discovered that Postorius mishandled specially crafted input. An attacker could use this     vulnerability that obtain sensitive information.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 / 11 host has a package installed that is affected by a vulnerability as referenced in the dsa-4970 advisory.

    Kevin Israel discovered that Postorius, the administrative web frontend for Mailman 3, didn't validate     whether a logged-in user owns the email address when unsubscribing. For the oldstable distribution     (buster), this problem has been fixed in version 1.2.4-1+deb10u1. For the stable distribution (bullseye),     this problem has been fixed in version 1.3.4-2+deb11u1. We recommend that you upgrade your postorius     packages. For the detailed security status of postorius please refer to its security tracker page at:
    https://security-tracker.debian.org/tracker/postorius

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
433426	SCA: security update for postorius (GHSA-v83x-78q3-gr2j)	Tenable Cloud Security	SCA Checks	medium
433426	SCA: security update for postorius (GHSA-v83x-78q3-gr2j)	Tenable Self-Hosted Container Security	SCA Checks	medium
155727	Ubuntu 18.04 LTS / 20.04 LTS : Postorius vulnerability (USN-5157-1)	Nessus	Ubuntu Local Security Checks	medium
153201	Debian DSA-4970-1 : postorius - security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2021-40347

medium

Tenable Plugins

medium

medium

medium

medium