CVE-2016-2856
Buffer Overflow in glibc pt_chown Local Privilege Escalation
Description
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.
INFO
Published Date :
March 14, 2016, 1:59 a.m.
Last Modified :
Nov. 28, 2016, 8:05 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
2.5
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-2856.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2016-2856 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-2856 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/84601 [No Types Assigned] -
CVE Translated by [email protected]
Jun. 03, 2016
Action Type Old Value New Value Removed Translation pt_chown en el paquete glibc en versiones anteriores a 2.19-18+deb8u4 en Debian jessie carece de verificación de paso de espacio de nombres asociado a la ejecución del descriptor de archivo, lo que permite a usuarios locales capturar pulsaciones del teclado y suplantar datos, y posiblemente obtener privilegios, a través de operaciones pts de lectura y escritura, relacionado con debian/sysdeps/linux.mk. NOTA: no está considerada una vulnerabilidad inicial en la GNU C Library porque la documentación de distribución tiene una clara recomendación de seguridad frente a la opción --enable-pt_chown. Added Translation 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 verificación de paso de espacio de nombres asociado a la ejecución del descriptor de archivo, lo que permite a usuarios locales capturar pulsaciones del teclado y suplantar datos, y posiblemente obtener privilegios, a través de operaciones pts de lectura y escritura, relacionado con debian/sysdeps/linux.mk. NOTA: no está considerada una vulnerabilidad inicial en la GNU C Library porque la documentación de distribución tiene una clara recomendación de seguridad frente a la opción --enable-pt_chown. -
Modified Analysis by [email protected]
Jun. 03, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 AND OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR cpe:2.3:a:gnu:glibc:2.18:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Configuration 2 AND OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR cpe:2.3:a:gnu:glibc:2.18:*:*:*:*:*:*:* (and previous) -
CVE Modified by [email protected]
Jun. 03, 2016
Action Type Old Value New Value Changed Description pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie 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. 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. Added Reference http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html Added Reference http://www.ubuntu.com/usn/USN-2985-2 Added Reference http://www.ubuntu.com/usn/USN-2985-1 -
Modified Analysis by [email protected]
Mar. 23, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 AND OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR cpe:2.3:a:gnu:glibc:2.18:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-264 -
Initial Analysis by [email protected]
Mar. 22, 2016
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-2856 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-2856
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.00%
score
0.53824
percentile