cbcvebase.
CVE-2019-11080
published 2019-06-06

CVE-2019-11080: Sitecore Experience Platform (XP) prior to 9.1.1 is vulnerable to remote code execution via deserialization, aka TFS # 293863. An authenticated user with…

PriorityP267high8.8CVSS 3.0
AVNACLPRLUINSUCHIHAH
EXPLOIT
EPSS
14.20%
96.1th percentile
Sitecore Experience Platform (XP) prior to 9.1.1 is vulnerable to remote code execution via deserialization, aka TFS # 293863. An authenticated user with necessary permissions is able to remotely execute OS commands by sending a crafted serialized object.

Affected

1 ranges
VendorProductVersion rangeFixed in
sitecoreexperience_platform< 9.1.19.1.1

Detection & IOCsextracted from sources · hover to see the quote

url/sitecore/shell/~/xaml/Sitecore.Shell.Applications.Dialogs.Progress.aspx↗
cookieCSRFTOKEN↗
  • →Monitor POST requests to the Progress.aspx endpoint for anomalous or oversized CSRFTOKEN parameter values, which may contain URL-encoded, base64-encoded ysoserial.net deserialization payloads. ↗
  • →Alert on authenticated requests to /sitecore/shell/~/xaml/Sitecore.Shell.Applications.Dialogs.Progress.aspx where the CSRFTOKEN parameter contains base64-encoded binary data inconsistent with a legitimate CSRF token. ↗
  • →Exploitation requires an authenticated session to the Sitecore Admin section; correlate suspicious deserialization activity with admin-level authenticated sessions. ↗
  • →Trigger condition is the Serialize users or domains action in the admin UI — monitor for unusual or repeated invocations of these admin functions followed by outbound OS command execution. ↗
  • ·Exploit requires authenticated access with sufficient permissions to the Sitecore Admin section; unauthenticated exploitation is not possible. ↗
  • ·The vulnerability affects Sitecore XP prior to version 9.1.1; the specific tested version is Sitecore 8.0 Revision 150802. ↗

CVSS provenance

nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
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