CVE-2019-15616 Server-side request forgery in Nextcloud Server

Medium 4.3 Published Updated

Attackers can exploit dangling remote shares to perform DNS pollution, potentially leading to SSRF and unauthorized data access in Nextcloud Server.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-15616?

CVE-2019-15616 is a medium-severity server-side request forgery vulnerability in Nextcloud Nextcloud Server, published on 4 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Dangling remote share attempts in Nextcloud 16 allow a DNS pollution when running long.

Weakness: CWE-74, CWE-93

Which versions are affected by CVE-2019-15616?

It affects 1 product.

Products include Nextcloud Nextcloud Server.

How do I fix CVE-2019-15616?

No fix has been published for CVE-2019-15616 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2019-15616 being exploited?

There is no known exploitation of CVE-2019-15616 in the wild and no public exploit code.

All Nextcloud Nextcloud Server vulnerabilities

Sources

Also known as GHSA-cg3p-cjqp-v7hh.

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