FKIE_CVE-2016-6323

Vulnerability from fkie_nvd - Published: 2016-10-07 14:59 - Updated: 2026-06-17 00:50
Severity
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.
References
secalert@redhat.comhttp://lists.opensuse.org/opensuse-updates/2016-10/msg00009.htmlThird Party Advisory
secalert@redhat.comhttp://www-01.ibm.com/support/docview.wss?uid=swg21995039
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2016/08/18/12Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/92532
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ/
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/
secalert@redhat.comhttps://security.gentoo.org/glsa/201706-19
secalert@redhat.comhttps://sourceware.org/bugzilla/show_bug.cgi?id=20435Issue Tracking
secalert@redhat.comhttps://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-10/msg00009.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www-01.ibm.com/support/docview.wss?uid=swg21995039
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/08/18/12Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/92532
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201706-19
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/bugzilla/show_bug.cgi?id=20435Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617
Impacted products
Vendor Product Version
gnu glibc *
opensuse opensuse 13.2
fedoraproject fedora 23
fedoraproject fedora 24
fedoraproject fedora 25
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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              "versionEndIncluding": "2.24",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n makecontext en GNU C Library (tambi\u00e9n conocido como glibc o libc6) en versiones anteriores a 2.25 crea contexto de ejecuci\u00f3n incompatibles con el desbobinador en plataformas ARM EABI (32-bit), lo que podr\u00eda permitir a atacantes dependientes del contexto provocar una denegaci\u00f3n de servicio (cuelgue), seg\u00fan lo demostrado por las aplicaciones compiladas utilizando gccgo, relacionado con la generaci\u00f3n de traza inversa."
    }
  ],
  "id": "CVE-2016-6323",
  "lastModified": "2026-06-17T00:50:49.800",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-10-07T14:59:06.007",
  "references": [
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      "source": "secalert@redhat.com",
      "tags": [
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      "url": "http://www-01.ibm.com/support/docview.wss?uid=swg21995039"
    },
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      "source": "secalert@redhat.com",
      "tags": [
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        "Third Party Advisory"
      ],
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      "url": "http://www.securityfocus.com/bid/92532"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/"
    },
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      "source": "secalert@redhat.com",
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    },
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      "source": "secalert@redhat.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://security.gentoo.org/glsa/201706-19"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=20435"
    },
    {
      "source": "secalert@redhat.com",
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      "url": "http://www.securityfocus.com/bid/92532"
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/"
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



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.