PT-2018-11462 · Linux+3 · Linux Kernel+3

Felix Wilhelm · Published 2018-06-24 · Updated 2019-10-03 · CVE-2018-12904

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.17.2

Description The issue is related to a lack of checking of CPL when nested virtualization is used, allowing local attackers to cause L1 KVM guests to VMEXIT. This could potentially lead to privilege escalations and denial of service attacks.

Recommendations For versions prior to 4.17.2, update to version 4.17.2 or later to resolve the issue.

Exploit

Fix

Related Identifiers

ALT-PU-2018-1971

ALT-PU-2018-1976

ALT-PU-2019-1433

CVE-2018-12904

MGASA-2018-0296

MGASA-2018-0340

MGASA-2018-0341

SUSE-SU-2018:2474-1

USN-3752-1

USN-3752-2

USN-3752-3

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 78

• 🔥 https://exploit-db.com/exploits/44944 · Exploit
• 🔥 https://bugs.chromium.org/p/project-zero/issues/detail?id=1589 · Exploit
• https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8 · Patch
• https://ubuntu.com/security/CVE-2018-1093 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12232 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0296 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-12904 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12904 · Vendor Advisory
• https://usn.ubuntu.com/3752-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1000204 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3752-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2474-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3752-3 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-12904 · Security Note