CVE-2017-9858 Information disclosure in n/a

High 7.5 Published Updated

Attackers can determine active and inactive user accounts on SMA Solar inverters by sending crafted packets, facilitating further attacks like brute force.

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-2017-9858?

CVE-2017-9858 is a high-severity vulnerability in n/a, published on 5 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in SMA Solar Technology products. By sending crafted packets to an inverter and observing the response, active and inactive user accounts can be determined. This aids in further attacks (such as a brute force attack) as one now knows exactly which users exist and which do not. NOTE: the vendor's position is that this "is not a security gap per se." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Weakness: CWE-200

Which versions are affected by CVE-2017-9858?

It affects 39 products.

Products include Sma Sunny Boy 1.5 Firmware, Sma Sunny Boy 2.5 Firmware, Sma Sunny Boy 3.0 Firmware, Sma Sunny Boy 3.6 Firmware, Sma Sunny Boy 3000tl Firmware, Sma Sunny Boy 3600 Firmware and 33 more.

How do I fix CVE-2017-9858?

No fix has been published for CVE-2017-9858 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-9858 being exploited?

There is no known exploitation of CVE-2017-9858 in the wild and no public exploit code.

Sources

Also known as GHSA-w793-7832-fj86.

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