CVE-2015-1356 Auth bypass in n/a

Medium 4.4 Published Updated

Remote attackers can escalate privileges by modifying unprotected project files in Siemens SIMATIC STEP 7, bypassing authorization controls.

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

What is CVE-2015-1356?

CVE-2015-1356 is a medium-severity authentication bypass vulnerability in n/a, published on 18 Feb 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Siemens SIMATIC STEP 7 (TIA Portal) before 13 SP1 determines a user's privileges on the basis of project-file fields that lack integrity protection, which allows remote attackers to establish arbitrary authorization data via a modified file.

Weakness: CWE-264

Which versions are affected by CVE-2015-1356?

It affects 1 product.

Products include Siemens Simatic Step 7.

How do I fix CVE-2015-1356?

No fix has been published for CVE-2015-1356 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2015-1356 being exploited?

There is no known exploitation of CVE-2015-1356 in the wild and no public exploit code.

Sources

Also known as GHSA-pc45-5f4x-xp95.

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