Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2019-20172

7.8 · HIGH

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwri…

Published Dec 31, 2019CWE-119EPSS 0.47%

Overview

CVE-2019-20172 is a high-severity vulnerability. It was published on December 31, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdomGitHubgithub.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9GitHubgithub.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdomGitHubgithub.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9

How CyberStrike helps

Frequently asked questions

What is CVE-2019-20172?

CVE-2019-20172 is a high-severity vulnerability. It was published on December 31, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2019-20172?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-20172?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-20172?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-20172 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2019

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999