PT-2019-1523 · Linux+2 · Linux Kernel+2

Jann Horn · Published 2019-02-06 · Updated 2022-04-05 · CVE-2019-9162

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 Linux kernel versions prior to 4.20.12

Description The issue is related to insufficient ASN.1 length checks in the SNMP NAT module of the Linux kernel, which can lead to out-of-bounds read and write operations. This can result in an OOPS or local privilege escalation. The snmp version and snmp helper are affected by this issue.

Recommendations For Linux kernel versions prior to 4.20.12, update to version 4.20.12 or later to resolve the issue. As a temporary workaround, consider disabling the SNMP NAT module until a patch is available.

Exploit

Fix

LPE

Improper Validation of Array Index

Memory Corruption

Weakness Enumeration

CWE-129

CWE-787

Related Identifiers

ALT-PU-2019-1299

ALT-PU-2019-1313

BDU:2019-00990

CVE-2019-9162

USN-3930-1

USN-3930-2

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 37

• 🔥 https://exploit-db.com/exploits/46477 · Exploit
• 🔥 https://bugs.chromium.org/p/project-zero/issues/detail?id=1776 · Exploit
• https://github.com/torvalds/linux/commit/c4c07b4d6fa1f11880eab8e076d3d060ef3f55fc · Patch
• https://ubuntu.com/security/CVE-2019-7222 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9003 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3459 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-9162 · Vendor Advisory
• https://usn.ubuntu.com/3930-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19824 · Vendor Advisory
• https://usn.ubuntu.com/3930-2 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-9162 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-7308 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-8912 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.12 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-8980 · Vendor Advisory