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Vulnerability details: VCID-qcaw-39uj-aaaa
Vulnerability ID VCID-qcaw-39uj-aaaa
Aliases CVE-2016-6515
Summary The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
Status Published
Exploitability 2.0
Weighted Severity 7.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-770 Allocation of Resources Without Limits or Throttling
System Score Found at
generic_textual Medium http://openwall.com/lists/oss-security/2016/08/01/2
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-6515.html
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-6515.json
epss 0.03466 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.03466 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.03466 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.03466 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.04500 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.75974 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.75974 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.84415 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.86398 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.86398 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.86398 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
epss 0.87741 https://api.first.org/data/v1/epss?cve=CVE-2016-6515
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1364935
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6515
cvssv2 5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2016-6515
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-6515
generic_textual Medium https://ubuntu.com/security/notices/USN-3061-1
cvssv3.1 7.5 http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
generic_textual HIGH http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
Reference id Reference type URL
http://openwall.com/lists/oss-security/2016/08/01/2
http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-6515.html
https://access.redhat.com/errata/RHSA-2017:2029
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-6515.json
https://api.first.org/data/v1/epss?cve=CVE-2016-6515
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6515
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc
https://security.netapp.com/advisory/ntap-20171130-0003/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us
https://ubuntu.com/security/notices/USN-3061-1
https://www.exploit-db.com/exploits/40888/
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securityfocus.com/bid/92212
http://www.securitytracker.com/id/1036487
1364935 https://bugzilla.redhat.com/show_bug.cgi?id=1364935
833823 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833823
cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
CVE-2016-6515 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/40888.py
CVE-2016-6515 https://nvd.nist.gov/vuln/detail/CVE-2016-6515
USN-3061-1 https://usn.ubuntu.com/3061-1/
Data source Exploit-DB
Date added Dec. 7, 2016
Description OpenSSH 7.2 - Denial of Service
Ransomware campaign use Unknown
Source publication date Dec. 7, 2016
Exploit type dos
Platform linux
Source update date Dec. 7, 2016
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-6515.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: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2016-6515
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-6515
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
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 0.91355
EPSS Score 0.03466
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.