CVE-2020-27650 Information disclosure in DiskStation Manager (DSM)

Medium 5.8 Published Updated

Attackers can intercept session cookies over HTTP due to missing Secure flags, potentially leading to account takeover on Synology NAS devices.

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-2020-27650?

CVE-2020-27650 is a medium-severity vulnerability in Synology Diskstation Manager, published on 29 Oct 2020. 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

Synology DiskStation Manager (DSM) before 6.2.3-25426-2 does not set the Secure flag for the session cookie in an HTTPS session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an HTTP session.

Weakness: CWE-311, CWE-614

Which versions are affected by CVE-2020-27650?

It affects 2 products.

Products include Synology Diskstation Manager, Synology Skynas Firmware.

How do I fix CVE-2020-27650?

No fix has been published for CVE-2020-27650 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-27650 being exploited?

There is no known exploitation of CVE-2020-27650 in the wild and no public exploit code.

All Synology Diskstation Manager vulnerabilities

Sources

Also known as GHSA-pr6j-q8cq-rhhr.

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