Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2021-36367
CVE-2021-36367:
NixOS vulnerability analysis and mitigation
Overview
PuTTY through version 0.75 was identified with a security vulnerability tracked as CVE-2021-36367. The vulnerability relates to SSH session establishment behavior where PuTTY would proceed with establishing an SSH session even without sending a substantive authentication response (NVD, Debian Security).
Technical details
The vulnerability stems from PuTTY's authentication handling mechanism where it would continue establishing an SSH session without proper authentication response validation. This behavior could potentially compromise the security of the SSH session establishment process (NVD).
Impact
This vulnerability made it easier for an attacker-controlled SSH server to present a later spoofed authentication prompt that could be used to capture credential data and utilize that data for purposes undesired by the client user (Debian LTS).
Mitigation and workarounds
The vulnerability was addressed in subsequent versions of PuTTY. For Debian systems, fixes were provided in version 0.74-1+deb11u1 for the oldstable distribution (bullseye) and version 0.78-2+deb12u1 for the stable distribution (bookworm) (Debian Security).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management