cve/2008/CVE-2008-4109.md

CVE-2008-4109

Description

A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.

POC

Reference

• http://www.ubuntu.com/usn/usn-649-1

Github

• https://github.com/CVEDB/awesome-cve-repo
• https://github.com/David-M-Berry/openssh-cve-discovery
• https://github.com/Passyed/regreSSHion-Fix
• https://github.com/TAM-K592/CVE-2024-6387
• https://github.com/almogopp/OpenSSH-CVE-2024-6387-Fix
• https://github.com/azurejoga/CVE-2024-6387-how-to-fix
• https://github.com/bigb0x/CVE-2024-6387
• https://github.com/bigb0x/OpenSSH-Scanner
• https://github.com/invaderslabs/regreSSHion-CVE-2024-6387-
• https://github.com/kalvin-net/NoLimit-Secu-RegreSSHion
• https://github.com/ryanalieh/openSSH-scanner
• https://github.com/s1d6point7bugcrowd/CVE-2024-6387-Race-Condition-in-Signal-Handling-for-OpenSSH