CVE-2017-16562Userpro Authentication Bypass
UserPro <= 4.9.17 - Authentication Bypass
Published Nov 9, 2017 · Updated Aug 5, 2024 · Also known as 51957ee1-a423-485b-8cfd-8eafaf6744e4, WORDFENCE-51957ee1-a423-485b-8cfd-8eafaf6744e4
Key Facts
Patch immediately- CVE-2017-16562 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Userpro (Userproplugin).
- It is exploited in the wild, listed in Industry KEV feed since Dec 5, 2022. Public exploit code is available.
- EPSS estimates a 27% probability of exploitation in the next 30 days.
- Fixed versions are available, including Userpro 4.9.17.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
27%
Higher than 98.0% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
46/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Dec 5, 2022
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
Description
The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Dec 5, 2022 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| UserproUserproplugin | See advisory | 4.9.17.1 |
Patched Releases
Userpro
4.9.17.1
Timeline
Publicly disclosed
Nov 9, 2017
Added to Industry KEV feed
Dec 5, 2022
Last updated
Aug 5, 2024
Weakness Type
- CWE-287 Improper Authentication
References
- advisorywpvulndb.com · 8950
- advisorywordfence.com · 51957ee1-a423-485b-8cfd-8eafaf6744e4
- advisorywordfence.com · 51957ee1-a423-485b-8cfd-8eafaf6744e4
- exploitExploitDB-43117
- exploit43117
FAQ
Common Questions.
The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.
Affected: Userpro (Userproplugin). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Dec 5, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Userpro 4.9.17.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2017-16562 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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