Quick answers
- Is CVE-2016-9676 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2016-9676 being exploited in the wild.
- How severe is CVE-2016-9676?
- Critical severity, with a CVSS score of 9.8, published 18 January 2017.
- Which products and versions are affected?
- Citrix Provisioning Services 7.0, 7.1, 7.6, 7.7, 7.8, 7.9, 7.11.
- Is there a fix for CVE-2016-9676?
- A patch was published on 2017-01-18: Citrix released version 7.12 to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2016-9676 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2016-9676?
- Check whether you run Citrix Provisioning Services at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A buffer overflow vulnerability (CWE-119) exists in Citrix Provisioning Services versions prior to 7.12. The flaw is reachable over the network and does not require authentication or user interaction. By sending specially crafted data to the service, an attacker can trigger a memory corruption event to execute arbitrary code with high privileges on the host system. Citrix addressed this issue in version 7.12 and provided security bulletin CTX219580 for affected customers.
Affected products
- Citrix Provisioning Services 7.0, 7.1, 7.6, 7.7, 7.8, 7.9, 7.11
Timeline
- 2016-11-23: disclosed: CVE assigned
- 2017-01-18: advisory: NVD publication date
- 2017-01-18: patched: Citrix released version 7.12 to address the issue