CVE-2017-6339 Weak cryptography in n/a
Attackers can download weakly encrypted private keys to decrypt HTTPS traffic, compromising confidentiality on Trend Micro IWSVA appliances.
- 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-2017-6339?
CVE-2017-6339 is a medium-severity vulnerability in n/a, published on 5 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5 before CP 1746 mismanages certain key and certificate data. Per IWSVA documentation, by default, IWSVA acts as a private Certificate Authority (CA) and dynamically generates digital certificates that are sent to client browsers to complete a secure passage for HTTPS connections. It also allows administrators to upload their own certificates signed by a root CA. An attacker with low privileges can download the current CA certificate and Private Key (either the default ones or ones uploaded by administrators) and use those to decrypt HTTPS traffic, thus compromising confidentiality. Also, the default Private Key on this appliance is encrypted with a very weak passphrase. If an appliance uses the default Certificate and Private Key provided by Trend Micro, an attacker can simply download these and decrypt the Private Key using the default/weak passphrase.
Which versions are affected by CVE-2017-6339?
It affects 1 product.
Products include Trendmicro Interscan Web Security Virtual Appliance.
How do I fix CVE-2017-6339?
No fix has been published for CVE-2017-6339 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-6339 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-6339 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
- CVE-2016-9269 Command injection in n/a
- CVE-2020-8465 Auth bypass in Trend Micro InterScan Web Security Virtual Appliance
- CVE-2020-8466 Command injection in Trend Micro InterScan Web Security Virtual Appliance
- CVE-2020-28578 Memory corruption in Trend Micro InterScan Web Security Virtual Appliance
- CVE-2020-8606 Auth bypass in Trend Micro InterScan Web Security Virtual Appliance
Sources
Also known as GHSA-8jrh-xx3q-344c.