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CVE-2019-10068

Kentico — Kentico Xperience Deserialization of Untrusted Data Vulnerability

Kentico · CWE-502 — Deserialization of untrusted data · in CISA KEV since 2022-03-25

ExigentKEV since 2022 · listed over a yearCISA KEVActively Exploited
86

EVRS 86 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 343 of 2,960 tracked

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Why it scores 86

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.951.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

xperience: update to a version newer than 9.0.51 | xperience: update to 10.0.52 or later | xperience: update to 11.0.48 or later | xperience: update to 12.0.15 or later

Affected versions

  • xperience>= 9.0.0 <= 9.0.51>= 10.0.0 < 10.0.52>= 11.0.0 < 11.0.48>= 12.0.0 < 12.0.15

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.951 (99.87th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-04-15 · KEV since 2022 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by mitre. Listed ENISA EUVD

Description

NVD

An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions. Due to a failure to validate security headers, it was possible for a specially crafted request to the staging service to bypass the initial authentication and proceed to deserialize user-controlled .NET object input. This deserialization then led to unauthenticated remote code execution on the server where the Kentico instance was hosted.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: Kentico CMS Staging SyncServer Unserialize Remote Command Execution (windows/http/kentico_staging_syncserver). A module existing is not the same as active exploitation; see metasploit.com.