cve/2021/CVE-2021-3999.md

CVE-2021-3999

Description

A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.

POC

Reference

• https://www.openwall.com/lists/oss-security/2022/01/24/4

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/flexiondotorg/CNCF-02
• https://github.com/maxim12z/ECommerce
• https://github.com/rootameen/vulpine