fkie_cve-2016-2856
Vulnerability from fkie_nvd
Published
2016-03-14 01:59
Modified
2025-04-12 10:46
Severity ?
Summary
pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie; the elibc package before 2.15-0ubuntu10.14 on Ubuntu 12.04 LTS and before 2.19-0ubuntu6.8 on Ubuntu 14.04 LTS; and the glibc package before 2.21-0ubuntu4.2 on Ubuntu 15.10 and before 2.23-0ubuntu1 on Ubuntu 16.04 LTS and 16.10 lacks a namespace check associated with file-descriptor passing, which allows local users to capture keystrokes and spoof data, and possibly gain privileges, via pts read and write operations, related to debian/sysdeps/linux.mk. NOTE: this is not considered a vulnerability in the upstream GNU C Library because the upstream documentation has a clear security recommendation against the --enable-pt_chown option.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
canonical | ubuntu_linux | 12.04 | |
canonical | ubuntu_linux | 14.04 | |
canonical | ubuntu_linux | 15.10 | |
debian | debian_linux | 8.0 | |
gnu | glibc | * |
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NOTE: this is not considered a vulnerability in the upstream GNU C Library because the upstream documentation has a clear security recommendation against the --enable-pt_chown option." }, { "lang": "es", "value": "pt_chown en el paquete glibc en versiones anteriores a 2.19-18+deb8u4 en Debian jessie; el paquete elibc en versiones anteriores a 2.15-0ubuntu10.14 en Ubuntu 12.04 LTS y en versiones anteriores a 2.19-0ubuntu6.8 en Ubuntu 14.04 LTS; y el paquete glibc en versiones anteriores a 2.21-0ubuntu4.2 en Ubuntu 15.10 y en versiones anteriores a 2.23-0ubuntu1 en Ubuntu 16.04 LTS y 16.10 carece de verificaci\u00f3n de paso de espacio de nombres asociado a la ejecuci\u00f3n del descriptor de archivo, lo que permite a usuarios locales capturar pulsaciones del teclado y suplantar datos, y posiblemente obtener privilegios, a trav\u00e9s de operaciones pts de lectura y escritura, relacionado con debian/sysdeps/linux.mk. NOTA: no est\u00e1 considerada una vulnerabilidad inicial en la GNU C Library porque la documentaci\u00f3n de distribuci\u00f3n tiene una clara recomendaci\u00f3n de seguridad frente a la opci\u00f3n --enable-pt_chown." } ], "id": "CVE-2016-2856", "lastModified": "2025-04-12T10:46:40.837", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV30": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" }, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2016-03-14T01:59:04.950", "references": [ { "source": "cve@mitre.org", "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=09f7764882a81e13e7b5d87d715412283a6ce403" }, { "source": "cve@mitre.org", "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958" }, { "source": "cve@mitre.org", "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html" }, { "source": "cve@mitre.org", "url": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/" }, { "source": "cve@mitre.org", "url": "http://www.openwall.com/lists/oss-security/2016/02/23/3" }, { "source": "cve@mitre.org", "url": "http://www.openwall.com/lists/oss-security/2016/03/07/2" }, { "source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/84601" }, { "source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2985-1" }, { "source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2985-2" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=09f7764882a81e13e7b5d87d715412283a6ce403" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2016/02/23/3" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2016/03/07/2" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/84601" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-2985-1" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-2985-2" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-264" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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