PT-2019-15779 · Kyrol · Kyrol Internet Security

Published 2019-11-21 · Updated 2019-12-04 · CVE-2019-19197

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Kyrol Internet Security version 9.0.6.9

Description The issue concerns the IOCTL handling in the kyrld.sys driver, allowing an attacker to achieve privilege escalation, denial-of-service, and code execution. This is possible because the IOCTL code 0x9C402401 using METHOD NEITHER results in a read primitive, which can be exploited via usermode.

Recommendations For Kyrol Internet Security version 9.0.6.9, consider disabling the kyrld.sys driver as a temporary workaround until a patch is available. Restrict access to the IOCTL code 0x9C402401 to minimize the risk of exploitation. Avoid using the METHOD NEITHER method in the affected driver until the issue is resolved.

Exploit

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2019-19197

Affected Products

Kyrol Internet Security

References · 4

• 🔥❌ https://github.com/nafiez/nafiez.github.io/blob/master/_posts/2019-11-16-kyrol-internet-security-driver-issue.md · Exploit, Deleted
• 🔥 https://nafiez.github.io/security/vulnerability/2019/11/16/kyrol-internet-security-driver-issue.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-19197 · Security Note
• https://osv.dev/vulnerability/CVE-2019-19197 · Vendor Advisory