CVE-2020-17496 on CISA KEV

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.

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• cwe.mitre.org — https://cwe.mitre.org/data/definitions/78.html
• blog.exploitee.rs — https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/
• forum.vbulletin.com — https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcement…
• seclists.org — https://seclists.org/fulldisclosure/2020/Aug/5

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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