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CVE-2018-6485

Published: 1 February 2018

An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

trusty
Released (2.19-0ubuntu6.15+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial Does not exist

glibc
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(2.27-3ubuntu1)
cosmic Not vulnerable
(2.27-3ubuntu1)
disco Not vulnerable
(2.27-3ubuntu1)
eoan Not vulnerable
(2.27-3ubuntu1)
focal Not vulnerable
(2.27-3ubuntu1)
trusty Does not exist

upstream
Released (2.27)
xenial
Released (2.23-0ubuntu11.2)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22 (master)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=01ba6f50762ad4fcd156a53ef7dbe671b64d3a5c (2.26)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9331dbdcd7aa8e997eb4caa9b1b0cb6c804320c8 (2.25)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d2450a97c3df5527ea0fd49743bc354c979c185f (2.22)

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