VulnerabilityAnalyzed
CVE-2020-17496
vBulletin PHP Module Remote Code Execution Vulnerability
KEVCRITICAL 9.8EPSS 87.7%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
vBulletin 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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 87.74% probability · 100th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-74
- Affected
- vbulletin/vbulletin
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-17496
References
- https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/Exploit, Third Party Advisory
- https://cwe.mitre.org/data/definitions/78.htmlTechnical Description
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4445227-vbulletin-5-6-0-5-6-1-5-6-2-security-patchPatch, Vendor Advisory
- https://seclists.org/fulldisclosure/2020/Aug/5Exploit, Mailing List, Third Party Advisory
- https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/Exploit, Third Party Advisory
- https://cwe.mitre.org/data/definitions/78.htmlTechnical Description
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4445227-vbulletin-5-6-0-5-6-1-5-6-2-security-patchPatch, Vendor Advisory
- https://seclists.org/fulldisclosure/2020/Aug/5Exploit, Mailing List, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17496US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.