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CVE-2017-15671

Published: 20 October 2017

The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27, when invoked with GLOB_TILDE, could skip freeing allocated memory when processing the ~ operator with a long user name, potentially leading to a denial of service (memory leak).

Notes

AuthorNote
mdeslaur
cvs-fix-glob-buffer-overflow.diff in xenial

Priority

Low

Cvss 3 Severity Score

5.9

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

jammy Does not exist

kinetic Does not exist

lunar Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

trusty Needed

upstream Needs triage

xenial Does not exist

zesty Does not exist

mantic Does not exist

glibc
Launchpad, Ubuntu, Debian
jammy Not vulnerable
(2.27-3ubuntu1)
kinetic Not vulnerable
(2.27-3ubuntu1)
lunar Not vulnerable
(2.27-3ubuntu1)
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)
groovy Not vulnerable
(2.27-3ubuntu1)
hirsute Not vulnerable
(2.27-3ubuntu1)
impish Not vulnerable
(2.27-3ubuntu1)
trusty Does not exist

upstream
Released (2.27)
xenial Not vulnerable
(2.23-0ubuntu11)
zesty Ignored
(end of life)
mantic Not vulnerable
(2.27-3ubuntu1)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c66c908230169c1bab1f83b071eb585baa214b9f (master)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e80fc1fc98bf614eb01cf8325503df3a1451a99c (master)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee68a4419a7c4473e48b16a55c50689a11f9b725 (2.25)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b2b39e667143a921eeec01517c9c99ea25eaafae (2.25)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=94825c8924b80518214ad9e3ca1f6589f209592c (2.24)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bddc5728810859952a2acaec6302308361e828cc (2.24)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H