Debian update for postorius



Published: 2021-09-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-40347
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
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postorius (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU56454

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-40347

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in views/list.py. A remote user logged in into any account can send a specially crafted HTTP POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.

Mitigation

Update postorius package to one of the following versions: 1.2.4-1+deb10u1, 1.3.4-2+deb11u1.

Vulnerable software versions

postorius (Debian package): 1.2.2-1 - 1.3.2-2.1

External links

http://www.debian.org/security/2021/dsa-4970


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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