Vulnerability Description
<p>An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user.</p> <p>To exploit the vulnerability, an attacker could include specially crafted OWA messages that could be loaded, without warning or filtering, from the attacker-controlled URL. This callback vector provides an information disclosure tactic used in web beacons and other types of tracking systems.</p> <p>The security update corrects the way that Exchange handles these token validations.</p>
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Exchange Server | 2013 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1696PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1696PatchVendor Advisory
FAQ
What is CVE-2020-16969?
CVE-2020-16969 is a vulnerability with a CVSS score of 7.1 (HIGH). <p>An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to ...
How severe is CVE-2020-16969?
CVE-2020-16969 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-16969?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Exchange Server.