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CVE-2015-5600

Description

The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.

POC

Reference

- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html

- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html

- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html

- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

- http://www.securityfocus.com/bid/91787

- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

- https://kc.mcafee.com/corporate/index?page=content&id=SB10136

- https://kc.mcafee.com/corporate/index?page=content&id=SB10157

- https://security.netapp.com/advisory/ntap-20151106-0001/

Github

- https://github.com/ARPSyndicate/cve-scores

- https://github.com/Live-Hack-CVE/CVE-2015-5600

- https://github.com/Manjunath-Malagundla/itsecgames-assignment

- https://github.com/Maribel0370/Nebula-io

- https://github.com/ahm3dhany/IDS-Evasion

- https://github.com/bigb0x/CVE-2024-6387

- https://github.com/bigb0x/OpenSSH-Scanner

- https://github.com/edsonjt81/https-github.com-gotr00t0day-OpenSSH-Scanner

- https://github.com/kira99007/cyber-security-intern-at-ELEVATE

- https://github.com/kmukoo101/CVEye

- https://github.com/lekctut/sdb-hw-13-01

- https://github.com/micaelarg/vulnerability_scanner_public

- https://github.com/pboonman196/Final_Project_CyberBootcamp

- https://github.com/pedr0alencar/vlab-metasploitable2

- https://github.com/ryanalieh/openSSH-scanner

- https://github.com/santhoshkite/AccuKnox-Security-assignment

- https://github.com/scmanjarrez/CVEScannerV2

- https://github.com/sjourdan/clair-lab

- https://github.com/vshaliii/DC-1-Vulnhub-Walkthrough

- https://github.com/vshaliii/DC-2-Vulnhub-Walkthrough