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

Related CPE's

a

openbsd

openssh

Vulnerable

a

netapp

clustered_data_ontap

-

Vulnerable

a

netapp

hci_management_node

-

Vulnerable

a

netapp

ontap_select_deploy_administration_utility

-

Vulnerable

a

netapp

solidfire

-

Vulnerable

References

https://github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pubkey.c#L261-L265

ExploitThird Party Advisory

https://github.com/openssh/openssh-portable/pull/270

PatchThird Party Advisory

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

Issue TrackingThird Party Advisory

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

Issue TrackingThird Party Advisory

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

ExploitThird Party Advisory

https://security.netapp.com/advisory/ntap-20211014-0005/

Third Party Advisory

https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak

Third Party Advisory

https://www.openwall.com/lists/oss-security/2018/08/24/1

Mailing ListThird Party Advisory

Weaknesses

[email protected]

Primary
NVD-CWE-Other

CVSS impact metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5.3 · Medium

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Modified

Published

2021-09-15T20:15:07.310

3 years ago

Last modified

2024-08-06T04:16:44.247

11 months ago