UBUNTU-CVE-2016-2856

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Source
https://ubuntu.com/security/CVE-2016-2856
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2856.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-2856
Upstream
Downstream
Related
Published
2016-03-13T00:00:00Z
Modified
2025-09-08T16:43:40Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

ptchown 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-ptchown option.

References

Affected packages

Ubuntu:14.04:LTS / eglibc

Package

Name
eglibc
Purl
pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.8?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.19-0ubuntu6.8

Affected versions

2.*

2.17-93ubuntu4
2.18-0ubuntu1
2.18-0ubuntu2
2.18-0ubuntu4
2.18-0ubuntu5
2.18-0ubuntu6
2.18-0ubuntu7
2.19-0ubuntu2
2.19-0ubuntu3
2.19-0ubuntu4
2.19-0ubuntu5
2.19-0ubuntu6
2.19-0ubuntu6.1
2.19-0ubuntu6.3
2.19-0ubuntu6.4
2.19-0ubuntu6.5
2.19-0ubuntu6.6
2.19-0ubuntu6.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "eglibc-source"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc-bin"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc-dev-bin"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-amd64"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-armel"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev-amd64"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev-armel"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev-i386"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev-ppc64"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-dev-x32"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-i386"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-pic"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-ppc64"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-prof"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "libc6-x32"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "multiarch-support"
        },
        {
            "binary_version": "2.19-0ubuntu6.8",
            "binary_name": "nscd"
        }
    ]
}