CVE-2020-17496
vBulletin — vBulletin PHP Module Remote Code Execution Vulnerability
vBulletin · CWE-74 · in CISA KEV since 2021-11-03
EVRS 84 of 100 Urgent
Patch This Cycle
Rank 487 of 2,960 tracked
Why it scores 84
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.875.
- 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 identifiedCISA required action
Fixed in
vbulletin: update to a version newer than 5.6.2
Affected versions
- vbulletin
>= 5.5.4 <= 5.6.2
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| 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. | 0.875 (99.76th 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. | 2022-05-03 · KEV since 2021 · 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
NVDvBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.
What CISA says to do
Public module
Metasploit lists a public excellent-rank module for this CVE: vBulletin 5.x /ajax/render/widget_tabbedcontainer_tab_panel PHP remote code execution. (multi/http/vbulletin_widget_template_rce). A module existing is not the same as active exploitation; see metasploit.com.