CVE-2019-9875

Known Exploited Public Exploit

Description

Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 11.89% Top 10%
KEV Since 
Vendor Advisory sitecore.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://dev.sitecore.net/Downloads.aspx product vendor advisory
https://www.synacktiv.com/blog.html third party advisory
https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf patch third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-9875?
CVE-2019-9875 has been scored as a high severity vulnerability.
How to fix CVE-2019-9875?
To fix CVE-2019-9875, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-9875 being actively exploited in the wild?
It is confirmed that CVE-2019-9875 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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