CVE-2018-3971 — An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handle

An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handler functionality of Sophos HitmanPro.Alert 3.7.6.744. A specially crafted IRP request can cause the driver to write data under controlled by an attacker address, resulting in memory corruption. An atta

01What is this vulnerability?

An exploitable arbitrary write vulnerability exists in the 0x2222CC IOCTL handler functionality of Sophos HitmanPro.Alert 3.7.6.744. A specially crafted IRP request can cause the driver to write data under controlled by an attacker address, resulting in memory corruption. An attacker can send IRP request to trigger this vulnerability.

02Affected products

Vendor	Product	Versions
Talos	Sophos	Sophos HitmanPro.Alert - hmpalert.sys 3.7.6.744 - Windows 7 x86

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-10-25T18:00:00.000Z
• Last modified: 2024-09-17T02:27:34.114Z

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/105743
• www.talosintelligence.com — https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0636