CVSS v3 4.3
ATTENTION: Exploitable on an adjacent network/low skill level to exploit
Successful exploitation of this vulnerability could allow an attacker to obtain technical information about the PeerVue Web Server, allowing an attacker to target a system for attack.
Change Healthcare reports the vulnerability affects the following product:
This vulnerability results from improper error handling in HTTP-based communications with the server, which could allow an attacker to obtain technical information.
Dan Regalado of Zingbox reported this vulnerability to NCCIC.
Change Healthcare has been very responsive and aggressive in their efforts to mitigate the issue and released a patch to remediate the reported vulnerability. Users should contact the Change Healthcare Support team for information regarding the patch.
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability, but information regarding this vulnerability has been publicly disclosed.
For any questions related to this report, please contact the CISA at:
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information: https://www.us-cert.gov/ics
or incident reporting: https://www.us-cert.gov/report
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