CVE-2017-12310 Information disclosure in Cisco Spark Hybrid Calendar Service
Unauthenticated attackers can view sensitive Office365 user data in unencrypted HTTP headers during auto-discovery, leading to information disclosure.
- 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-2017-12310?
CVE-2017-12310 is a high-severity vulnerability in Cisco Spark Hybrid Calendar Service, published on 27 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the auto discovery phase of Cisco Spark Hybrid Calendar Service could allow an unauthenticated, remote attacker to view sensitive information in the unencrypted headers of an HTTP method request. The attacker could use this information to conduct additional reconnaissance attacks leading to the disclosure of sensitive customer data. The vulnerability exists in the auto discovery phase because an unencrypted HTTP request is made due to requirements for implementing the Hybrid Calendar service. An attacker could exploit this vulnerability by monitoring the unencrypted traffic on the network. An exploit could allow the attacker to access sensitive customer data belonging to Office365 users, such as email and calendar events. Cisco Bug IDs: CSCvg35593.
Which versions are affected by CVE-2017-12310?
It affects 1 product.
Products include Cisco Spark Hybrid Calendar Service.
How do I fix CVE-2017-12310?
No fix has been published for CVE-2017-12310 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-12310 being exploited?
There is no known exploitation of CVE-2017-12310 in the wild and no public exploit code.
Sources
Also known as GHSA-wg93-6mfv-3545.