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Vulnerability details: VCID-7rkw-a8y5-aaak
Vulnerability ID VCID-7rkw-a8y5-aaak
Aliases CVE-2016-20012
Summary ** 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.
Status Disputed
Exploitability 0.5
Weighted Severity 5.3
Risk 2.6
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-20012.json
epss 0.00524 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.00524 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.00524 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.00524 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.02113 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.13614 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.13614 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.13614 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.13614 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.13614 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.14039 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16394 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.16885 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.20004 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.20004 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.20004 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
epss 0.57152 https://api.first.org/data/v1/epss?cve=CVE-2016-20012
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=2048523
cvssv3.1 3.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2016-20012
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2016-20012
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2016-20012
archlinux Low https://security.archlinux.org/AVG-2392
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-20012.json
https://api.first.org/data/v1/epss?cve=CVE-2016-20012
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-20012
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pubkey.c#L261-L265
https://github.com/openssh/openssh-portable/pull/270
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/
https://security.netapp.com/advisory/ntap-20211014-0005/
https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak
https://www.openwall.com/lists/oss-security/2018/08/24/1
2048523 https://bugzilla.redhat.com/show_bug.cgi?id=2048523
AVG-2392 https://security.archlinux.org/AVG-2392
cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
CVE-2016-20012 https://nvd.nist.gov/vuln/detail/CVE-2016-20012
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-20012.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-20012
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-20012
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-20012
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.76758
EPSS Score 0.00524
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
2024-09-21T22:40:28.433712+00:00 NVD CVE Status Improver Improve https://cveawg.mitre.org/api/cve/CVE-2016-20012 34.0.1