CVE-2021-20875 Open redirect in GroupSession Free edition, GroupSession byCloud, GroupSession ZION

Medium 6.1 Published 24 Dec 2021 Updated 3 Aug 2024

Remote attackers can redirect users to malicious sites via crafted URLs, facilitating phishing attacks against GroupSession users.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-20875?

CVE-2021-20875 is a medium-severity vulnerability in Japan Total System Co.,Ltd. GroupSession Free edition, GroupSession byCloud, GroupSession ZION, published on 24 Dec 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Open redirect vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to redirect users to arbitrary web sites and conduct phishing attacks by having a user to access a specially crafted URL.

Weakness: CWE-601

Which versions are affected by CVE-2021-20875?

It affects 1 product.

Products include Groupsession Groupsession.

How do I fix CVE-2021-20875?

No fix has been published for CVE-2021-20875 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-20875 being exploited?

There is no known exploitation of CVE-2021-20875 in the wild and no public exploit code.

Sources

Also known as GHSA-vj52-jgg8-wg96.