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Login as User or Customer <= 3.8 — Unauthenticated Limited Admin Account Compromise

CVE-2023-7247Published · Updated

Action summary

Affected: 3.8 – 3.8No patch available

What to do until a fix ships
Severity
High8.1
CVSS
8.1
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-288 Authentication Bypass Using an Alternate Path or Channel
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed

Am I affected?

Login as User or Customer — User Switching login-as-customer-or-user

  1. Affected3.8 – 3.8
  2. PatchedNo fix yet

No patched version available.

You are affected if you run 3.8 – 3.8. No fixed version has been released.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Login as User or Customer — User Switching.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Login as User or Customer — User Switching to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Dmitrii Ignatyev.

The Login as User or Customer plugin for WordPress is vulnerable to admin account compromise in version 3.8. This is due to the plugin not validating that the user switching back to the administrative account is the user who initiated the original login as another user. This makes it possible for unauthenticated attackers to access administrative user accounts when user switching is in progress by an administrator. Please note that this would be extremely difficult to exploit as it relies on the administrator switching to another user and the attacker knowing the admin users ID and the user ID of the user the admin switched to. It may be possible with social engineering.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Login as User or Customer — User Switching

All 5
More vulnerabilities in Login as User or Customer — User Switching
SeverityVulnerabilityCVEPublished
Critical9.8Authentication Bypass
≤3.8Update to 3.9.1
CVE-2023-51484
Critical9.8Privilege Escalation
≤3.2Update to 3.3
CVE-2022-4305
High8.8Cross-Site Request Forgery to Arbitrary Plugin Installation/Activation
≤1.9Update to 2.1
—
High8.8Missing Authorization to Arbitrary Plugin Installation/Activation
<1.8Update to 1.8
CVE-2021-24195

Timeline

  1. CVE published

    Severity high, CVSS 8.1

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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