Executive Summary

Informations
Name CVE-2016-2856 First vendor Publication 2016-03-13
Vendor Cve Last vendor Modification 2016-11-28

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.4
Base Score 8.4 Environmental Score 8.4
impact SubScore 5.9 Temporal Score 8.4
Exploitabality Sub Score 2.5
 
Attack Vector Local Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2856

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-264 Permissions, Privileges, and Access Controls

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 3

Nessus® Vulnerability Scanner

Date Description
2016-05-27 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2985-2.nasl - Type : ACT_GATHER_INFO
2016-05-26 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2985-1.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/84601
CONFIRM http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09...
http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11...
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html
MISC http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/
MLIST http://www.openwall.com/lists/oss-security/2016/02/23/3
http://www.openwall.com/lists/oss-security/2016/03/07/2
UBUNTU http://www.ubuntu.com/usn/USN-2985-1
http://www.ubuntu.com/usn/USN-2985-2

Alert History

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Date Informations
2021-05-04 12:48:16
  • Multiple Updates
2021-04-22 01:59:26
  • Multiple Updates
2020-05-23 00:50:31
  • Multiple Updates
2016-11-29 00:26:05
  • Multiple Updates
2016-06-28 19:57:46
  • Multiple Updates
2016-06-04 00:24:48
  • Multiple Updates
2016-06-03 09:26:42
  • Multiple Updates
2016-05-28 13:25:29
  • Multiple Updates
2016-05-27 13:27:33
  • Multiple Updates
2016-03-23 21:22:33
  • Multiple Updates
2016-03-14 09:21:38
  • First insertion