CVE-2018-19650

Published: Dec 5, 2018Updated: Nov 21, 2024 Sources: CVE List NVDCWE-787

7.8HIGH

NVD MITRE

Description

Local attackers can trigger a stack-based buffer overflow on vulnerable installations of Antiy-AVL ATool security management v1.0.0.22. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the processing of IOCTL 0x80002000 by the IRPFile.sys Antiy-AVL ATool kernel driver. The bug is caused by failure to properly validate the length of the user-supplied data, which results in a kernel stack buffer overflow. An attacker can leverage this vulnerability to execute arbitrary code in the context of the kernel, which could lead to privilege escalation and a failed exploit could lead to denial of service.

In plain language

AI Worth attention

Antiy-AVL ATool security management v1.0.0.22 has a flaw that can let someone already using a computer gain full control of it, so affected business systems should be reviewed promptly.

Executive summary

A local, low-privileged attacker can exploit improper IOCTL input-length validation in the IRPFile.sys kernel driver to cause a stack-based buffer overflow and execute code as the kernel.

If affected, business impact

Full computer takeoverSecurity controls disabledSystem downtimeRansomware risk

What to do now

Check whether any business computer runs Antiy-AVL ATool security management v1.0.0.22.
Ask your IT provider or Antiy-AVL for a supported update; no fixed version or vendor patch is currently known.
Until guidance is available, limit access to affected computers to trusted users and investigate unexpected system crashes or privilege changes.

May need vendor / contractor work

What is it

This is a weakness in a component that operates at the deepest level of a Windows computer. It is like a person who already has a staff key finding a way to obtain the master key, potentially taking over the entire machine or making it stop working.

Who is affected

This matters if you run Antiy-AVL ATool security management v1.0.0.22 on business computers. It is only a risk if an attacker already has the ability to run low-privileged code on the affected computer.

How urgent is it

Public exploit code is available, so treat affected systems as an amber-priority issue and reduce opportunities for untrusted local code to run. It is not listed in CISA’s catalog of vulnerabilities known to be exploited in the wild, but systems running the affected version should be reviewed promptly.

What to do — in detail

Inventory endpoints for Antiy-AVL ATool security management v1.0.0.22 and verify whether the IRPFile.sys driver is installed and loaded.
No fixed version, vendor patch, or CISA KEV remediation due date is available in the findings. Contact Antiy-AVL or the product supplier for supported remediation before changing or removing the driver.
If patching is delayed, restrict interactive access and software execution on affected endpoints to trusted administrators and approved applications; the findings do not document a vendor workaround.
Watch affected endpoints for unexpected crashes, driver-related failures, suspicious low-privileged process activity, and anomalous privilege elevation attempts.

Technical context

CVE-2018-19650 is rated CVSS 7.8 High (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and maps to CWE-787. The vulnerable IRPFile.sys driver mishandles user-supplied data length for IOCTL 0x80002000, allowing a kernel stack buffer overflow; successful exploitation can yield kernel-context code execution, while failed attempts may cause denial of service. One public exploit is known. EPSS predicts 0.6% likelihood (48th percentile) with a flat trend. It is not in CISA KEV, meaning CISA has not listed it as known exploited in the wild.

This is a general assessment based on public vulnerability data. It does not account for your specific infrastructure — when in doubt, consult a security specialist.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-787

Affected Products

antiy

commercial

anti virus lab atoolOn-prem

Security Products / endpoint-av-edr

and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

http://packetstormsecurity.com/files/150549/ATool-1.0.0.22-Stack-Buffer-Overflow.html

packetstormsecurity.com

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