CVE-2015-2823 Auth bypass in n/a

Medium 6.8 Published 8 Apr 2015 Updated 6 Aug 2024

Remote attackers can bypass authentication on Siemens HMI panels by using password hashes, gaining unauthorized access to industrial control systems.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2015-2823?

CVE-2015-2823 is a medium-severity authentication bypass vulnerability in n/a, published on 8 Apr 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Siemens SIMATIC HMI Basic Panels 2nd Generation before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Comfort Panels before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Advanced before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Professional before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Basic Panels 1st Generation (WinCC TIA Portal), SIMATIC HMI Mobile Panel 277 (WinCC TIA Portal), SIMATIC HMI Multi Panels (WinCC TIA Portal), and SIMATIC WinCC 7.x before 7.3 Upd4 allow remote attackers to complete authentication by leveraging knowledge of a password hash without knowledge of the associated password.

Weakness: CWE-287

Which versions are affected by CVE-2015-2823?

It affects 1 product.

Products include Siemens Wincc.

How do I fix CVE-2015-2823?

No fix has been published for CVE-2015-2823 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-2015-2823 being exploited?

There is no known exploitation of CVE-2015-2823 in the wild and no public exploit code.

Sources

Also known as GHSA-5h37-jfgm-xqmg.