Vulnerability-Lookup

CVE-2016-10011 (GCVE-0-2016-10011)

Vulnerability from cvelistv5 – Published: 2017-01-05 00:00 – Updated: 2026-05-29 20:19

Summary

authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-29 20:19 UTC

CWE

n/a
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mitre mitre root

References

12 references

URL	Tags
https://security.netapp.com/advisory/ntap-2017113…
http://www.openwall.com/lists/oss-security/2016/12/19/2	mailing-list
http://www.securitytracker.com/id/1037490	vdb-entry
https://github.com/openbsd/src/commit/ac8147a06ed…
https://support.hpe.com/hpsc/doc/public/display?d…
http://www.slackware.com/security/viewer.php?l=sl…
https://access.redhat.com/errata/RHSA-2017:2029	vendor-advisory
https://lists.debian.org/debian-lts-announce/2018…	mailing-list
http://www.securityfocus.com/bid/94977	vdb-entry
https://www.openssh.com/txt/release-7.4
https://cert-portal.siemens.com/productcert/pdf/s…
https://cert-portal.siemens.com/productcert/pdf/s…

Date Public

2016-12-19 00:00

Show details on NVD website

JSON

To clipboard

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      "id": "CVE-2016-10011",
      "initial_release_date": "2016-12-19T00:00:00+00:00",
      "product_status:fixed": "456",
      "product_status:known_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssh: Leak of host private key material to privilege-separated child process via realloc()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-10011.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-31T01:47:09Z",
      "cve": "CVE-2016-10011",
      "id": "CVE-2016-10011",
      "initial_release_date": "2023-02-15T04:54:34Z",
      "product_status:known_affected": "337",
      "product_status:recommended": "518",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-10011",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-10011.json",
      "version": "42"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20171130-0002/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2016/12/19/2\", \"name\": \"[oss-security] 20161219 Announce: OpenSSH 7.4 released\", \"tags\": [\"mailing-list\", \"x_transferred\"]}, {\"url\": \"http://www.securitytracker.com/id/1037490\", \"name\": \"1037490\", \"tags\": [\"vdb-entry\", \"x_transferred\"]}, {\"url\": \"https://github.com/openbsd/src/commit/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbux03818en_us\", \"tags\": [\"x_transferred\"]}, {\"url\": \"http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.647637\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:2029\", \"name\": \"RHSA-2017:2029\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html\", \"name\": \"[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update\", \"tags\": [\"mailing-list\", \"x_transferred\"]}, {\"url\": \"http://www.securityfocus.com/bid/94977\", \"name\": \"94977\", \"tags\": [\"vdb-entry\", \"x_transferred\"]}, {\"url\": \"https://www.openssh.com/txt/release-7.4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-06T03:07:32.056Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.2, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2016-10011\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-29T20:19:02.373432Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-29T20:18:59.455Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"datePublic\": \"2016-12-19T00:00:00.000Z\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20171130-0002/\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2016/12/19/2\", \"name\": \"[oss-security] 20161219 Announce: OpenSSH 7.4 released\", \"tags\": [\"mailing-list\"]}, {\"url\": \"http://www.securitytracker.com/id/1037490\", \"name\": \"1037490\", \"tags\": [\"vdb-entry\"]}, {\"url\": \"https://github.com/openbsd/src/commit/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9\"}, {\"url\": \"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbux03818en_us\"}, {\"url\": \"http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.647637\"}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:2029\", \"name\": \"RHSA-2017:2029\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html\", \"name\": \"[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update\", \"tags\": [\"mailing-list\"]}, {\"url\": \"http://www.securityfocus.com/bid/94977\", \"name\": \"94977\", \"tags\": [\"vdb-entry\"]}, {\"url\": \"https://www.openssh.com/txt/release-7.4\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2022-12-13T00:00:00.000Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2016-10011\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-29T20:19:06.040Z\", \"dateReserved\": \"2016-12-19T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2017-01-05T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

SUSE-SU-2017:0603-1

Vulnerability from csaf_suse - Published: 2017-03-03 16:46 - Updated: 2017-03-03 16:46

Summary

Security update for openssh

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 40 products

Open the full advisory

SUSE-SU-2017:0606-1

Vulnerability from csaf_suse - Published: 2017-03-06 07:28 - Updated: 2017-03-06 07:28

Summary

Security update for openssh

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 33 products

Open the full advisory

SUSE-SU-2017:0607-1

Vulnerability from csaf_suse - Published: 2017-03-06 10:26 - Updated: 2017-03-06 10:26

Summary

Security update for openssh

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 24 products

Open the full advisory

SUSE-SU-2017:0607-2

Vulnerability from csaf_suse - Published: 2017-03-06 10:26 - Updated: 2017-03-06 10:26

Summary

Security update for openssh

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 31 products

Open the full advisory

SUSE-SU-2017:0607-3

Vulnerability from csaf_suse - Published: 2017-03-06 10:26 - Updated: 2017-03-06 10:26

Summary

Security update for openssh

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 12 products

Open the full advisory

SUSE-SU-2017:1661-1

Vulnerability from csaf_suse - Published: 2017-06-23 08:29 - Updated: 2017-06-23 08:29

Summary

Security update for openssh-openssl1

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

5.5 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 10 products

Open the full advisory

ubuntu-cve-2016-10011

Vulnerability from osv_ubuntu

Published

2017-01-04 00:00

Modified

2026-06-01 07:04

Summary

Details

Severity

5.5 (Medium)


                    
                      CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

6.2 (Medium)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2016-10011	REPORT
	https://www.openssh.com/txt/release-7.4	REPORT
	http://www.openwall.com/lists/oss-security/2016/12/19/2	REPORT
	https://ubuntu.com/security/notices/USN-3538-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2016-10011	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openssh-client",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          },
          {
            "binary_name": "openssh-server",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          },
          {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          },
          {
            "binary_name": "ssh",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          },
          {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          },
          {
            "binary_name": "ssh-krb5",
            "binary_version": "1:6.6p1-2ubuntu2.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "openssh",
        "purl": "pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.10?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:6.6p1-2ubuntu2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:6.2p2-6",
        "1:6.2p2-6ubuntu1",
        "1:6.4p1-1",
        "1:6.4p1-2",
        "1:6.5p1-1",
        "1:6.5p1-2",
        "1:6.5p1-3",
        "1:6.5p1-4",
        "1:6.5p1-6",
        "1:6.6p1-1",
        "1:6.6p1-2",
        "1:6.6p1-2ubuntu1",
        "1:6.6p1-2ubuntu2",
        "1:6.6p1-2ubuntu2.2",
        "1:6.6p1-2ubuntu2.3",
        "1:6.6p1-2ubuntu2.4",
        "1:6.6p1-2ubuntu2.6",
        "1:6.6p1-2ubuntu2.7",
        "1:6.6p1-2ubuntu2.8"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openssh-client",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "openssh-client-ssh1",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "openssh-server",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "ssh",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          },
          {
            "binary_name": "ssh-krb5",
            "binary_version": "1:7.2p2-4ubuntu2.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "openssh",
        "purl": "pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.4?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:7.2p2-4ubuntu2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:6.9p1-2",
        "1:6.9p1-3",
        "1:7.1p1-1",
        "1:7.1p1-3",
        "1:7.1p1-4",
        "1:7.1p1-6",
        "1:7.1p2-1",
        "1:7.1p2-2",
        "1:7.2p1-1",
        "1:7.2p2-1",
        "1:7.2p2-2",
        "1:7.2p2-3",
        "1:7.2p2-4",
        "1:7.2p2-4ubuntu1",
        "1:7.2p2-4ubuntu2.1",
        "1:7.2p2-4ubuntu2.2"
      ]
    }
  ],
  "aliases": [],
  "details": "authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.",
  "id": "UBUNTU-CVE-2016-10011",
  "modified": "2026-06-01T07:04:35Z",
  "published": "2017-01-04T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-10011"
    },
    {
      "type": "REPORT",
      "url": "https://www.openssh.com/txt/release-7.4"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2016/12/19/2"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3538-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-10011"
    }
  ],
  "related": [
    "USN-3538-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-10011"
  ]
}

WID-SEC-W-2023-1996

Vulnerability from csaf_certbund - Published: 2016-12-19 23:00 - Updated: 2026-01-12 23:00

Summary

OpenSSH: Mehrere Schwachstellen

Severity

Hoch

Scope

6 vulnerabilities in this advisory, including CVE-2016-10011.

CVE-2016-10011

Known affected: 11 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2016-10011 (GCVE-0-2016-10011)

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour