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CVE-2016-1234

Published: 1 June 2016

Stack-based buffer overflow in the glob implementation in GNU C Library (aka glibc) before 2.24, when GLOB_ALTDIRFUNC is used, allows context-dependent attackers to cause a denial of service (crash) via a long name.

From the Ubuntu Security Team

Alexander Cherepanov discovered a stack-based buffer overflow in the glob implementation of the GNU C Library. An attacker could use this to specially craft a directory layout and cause a denial of service.

Notes

AuthorNote
sbeattie
see glibc bug for reproducer
requires malicious fs layout

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
glibc
Launchpad, Ubuntu, Debian
zesty Not vulnerable
(2.24-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (2.24)
wily Ignored
(end of life)
xenial
Released (2.23-0ubuntu6)
yakkety Not vulnerable
(2.24-0ubuntu1)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5171f3079f2cc53e0548fc4967361f4d1ce9d7ea
eglibc
Launchpad, Ubuntu, Debian
precise
Released (2.15-0ubuntu10.16)
trusty
Released (2.19-0ubuntu6.10)
upstream Needs triage

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H