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CVE-2016-20012

Description

OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product

POC

Reference

- https://github.com/openssh/openssh-portable/pull/270#issuecomment-920577097

- https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185

- https://rushter.com/blog/public-ssh-keys/

Github

- https://github.com/ARPSyndicate/cvemon

- https://github.com/CVEDB/awesome-cve-repo

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

- https://github.com/NeoOniX/5ATTACK

- https://github.com/Totes5706/TotesHTB

- https://github.com/accalina/crowflag

- https://github.com/alvarigno/ChocolateFire-DockerLab

- https://github.com/alvarigno22/ChocolateFire-DockerLab

- https://github.com/aztec-eagle/cve-2016-20012

- https://github.com/chav00ooo/CYB333-Final-VulnerabilityScanner

- https://github.com/firatesatoglu/iot-searchengine

- https://github.com/firatesatoglu/shodanSearch

- https://github.com/krlabs/openssh-vulnerabilities

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

- https://github.com/omerfsen/terraform-almalinux-libvirt

- https://github.com/omerfsen/terraform-rockylinux-libvirt

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

- https://github.com/phx/cvescan

- https://github.com/vhgalvez/terraform-rockylinux-libvirt-kvm

- https://github.com/wooflock/nmap-airgapped-vulnscan