CVEs-PoC/2016/CVE-2016-20012.md

CVE-2016-20012

Description

** DISPUTED ** 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-920577097
• https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185
• https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185
• https://rushter.com/blog/public-ssh-keys/
• https://rushter.com/blog/public-ssh-keys/

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/Totes5706/TotesHTB
• https://github.com/accalina/crowflag
• https://github.com/firatesatoglu/iot-searchengine
• https://github.com/firatesatoglu/shodanSearch
• https://github.com/omerfsen/terraform-almalinux-libvirt
• https://github.com/omerfsen/terraform-rockylinux-libvirt
• https://github.com/phx/cvescan
• https://github.com/vhgalvez/terraform-rockylinux-libvirt-kvm