PT-2019-16118 · Serenityos · Serenityos

Fire30 · CVE-2019-20172 · Published 2019-12-31 · Updated 2022-12-08

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 SerenityOS versions prior to 2019-12-30

Description The issue allows local users to gain privileges by overwriting a return address found on the kernel stack, due to the failure of Kernel/VM/MemoryManager.cpp to reject syscalls with pointers into the kernel-only virtual address space.

Recommendations For versions prior to 2019-12-30, update to a version released after 2019-12-30 to resolve the issue.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2019-20172

Affected Products

Serenityos

References · 4

• 🔥 https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom · Exploit
• https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-20172 · Security Note
• https://osv.dev/vulnerability/CVE-2019-20172 · Vendor Advisory