CVE-2019-17666 Memory corruption in n/a

High 8.8 Published Updated

A buffer overflow in the Linux kernel's Realtek Wi-Fi driver allows attackers to execute arbitrary code or escalate privileges.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2019-17666?

CVE-2019-17666 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 17 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a certain upper-bound check, leading to a buffer overflow.

Weakness: CWE-120

Which versions are affected by CVE-2019-17666?

It affects 3 products.

Linux distribution packages (40)
kernel Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-abi-whitelists Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug-debuginfo Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug-devel Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debuginfo Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-devel Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-doc Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-debuginfo Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-libs Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-libs-devel Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
perf Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
perf-debuginfo Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
python-perf Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
python-perf-debuginfo Red Hat:rhel_aus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-abi-whitelists Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-bootwrapper Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug-debuginfo Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug-devel Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debuginfo Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debuginfo-common-ppc64le Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debuginfo-common-x86_64 Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-devel Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-doc Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-debuginfo Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-libs Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-tools-libs-devel Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
perf Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
perf-debuginfo Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
python-perf Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
python-perf-debuginfo Red Hat:rhel_e4s:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel Red Hat:rhel_tus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-abi-whitelists Red Hat:rhel_tus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug Red Hat:rhel_tus:7.3::serverAll versions0:3.10.0-514.74.1.el7
kernel-debug-debuginfo Red Hat:rhel_tus:7.3::serverAll versions0:3.10.0-514.74.1.el7

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.

How do I fix CVE-2019-17666?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-17666 being exploited?

There is no known exploitation of CVE-2019-17666 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-17666, GHSA-wcxr-pc79-vh4x, MGASA-2019-0306, RHSA-2020:1473, UBUNTU-CVE-2019-17666.

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