CVE-2016-2856
- State
- Published
- Severity
- Not scored
- Published
- Mar 14, 2016
- Updated
- Aug 5, 2024
- Reserved
- Mar 6, 2016
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/
- http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958
- [oss-security] 20160306 Re: Access to /dev/pts devices via pt_chown and user namespacesmailing-list
- 84601vdb-entry
- USN-2985-2vendor-advisory
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html
- http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403
- [oss-security] 20160223 Access to /dev/pts devices via pt_chown and user namespacesmailing-list
- USN-2985-1vendor-advisory
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