cve-2016-2856
Vulnerability from cvelistv5
Published
2016-03-14 01:00
Modified
2024-08-05 23:40
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
cve@mitre.orghttp://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403
cve@mitre.orghttp://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958
cve@mitre.orghttp://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html
cve@mitre.orghttp://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/02/23/3
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/03/07/2
cve@mitre.orghttp://www.securityfocus.com/bid/84601
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2985-1
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2985-2
af854a3a-2127-422b-91ae-364da2661108http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403
af854a3a-2127-422b-91ae-364da2661108http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958
af854a3a-2127-422b-91ae-364da2661108http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html
af854a3a-2127-422b-91ae-364da2661108http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/02/23/3
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/03/07/2
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/84601
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2985-1
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2985-2
Impacted products
Vendor Product Version
Show details on NVD website

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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.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":7.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":3.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-264\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B6B7CAD7-9D4E-4FDB-88E3-1E583210A01F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"B5A6F2F3-4894-4392-8296-3B8DD2679084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E88A537F-F4D0-46B9-9E37-965233C2A355\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.18\",\"matchCriteriaId\":\"EDDAD2B2-386E-4DEA-A20E-0C2197E12089\"}]}]}],\"references\":[{\"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\":\"cve@mitre.org\"},{\"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\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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