CVE-2016-20012

5.3MEDIUM

Key Information:

Vendor
OpenBSD
Status
Openssh
Vendor
CVE Published:
15 September 2021

Summary

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

References

https://github.com/openssh/openssh-portable/pull/270
x_refsource_MISC
https://github.com/openssh/openssh-portable/blob/d0fffc88...
x_refsource_MISC
https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreI...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.