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CVE-2018-11236

Published: 18 May 2018

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
hirsute Does not exist

jammy Does not exist

artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

trusty Needed

upstream Needs triage

xenial Does not exist

mantic Does not exist

glibc
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(2.28-0ubuntu1)
jammy Not vulnerable
(2.28-0ubuntu1)
artful Ignored
(end of life)
bionic
Released (2.27-3ubuntu1.2)
cosmic Not vulnerable
(2.28-0ubuntu1)
disco Not vulnerable
(2.28-0ubuntu1)
eoan Not vulnerable
(2.28-0ubuntu1)
focal Not vulnerable
(2.28-0ubuntu1)
groovy Not vulnerable
(2.28-0ubuntu1)
impish Not vulnerable
(2.28-0ubuntu1)
kinetic Not vulnerable
(2.28-0ubuntu1)
lunar Not vulnerable
(2.28-0ubuntu1)
trusty Does not exist

upstream
Released (2.28)
xenial
Released (2.23-0ubuntu11.2)
mantic Not vulnerable
(2.28-0ubuntu1)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5460617d1567657621107d895ee2dd83bc1f88f2
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f19e67884c55c2dac6db3b146d80a769e322ecbe
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=af7519f7b35024224c163e32a89fb247b0c446fc
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ff52a12250bd381aaef91edc0269f6e3e79d20ac

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H