CVE-2016-2856

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.

CVSS v3.0

8.4 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

1.08% chance of exploitation in the next 30 days, 63th percentile

Published

2016-03-14

Updated

2024-08-05

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/41760

References

• CVE Record
• NVD entry

Related

• CVE-2016-2854
• CVE-2016-3053
• CVE-2016-2853
• CVE-2016-3074
• CVE-2016-2851
• CVE-2016-3078