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CVE-2020-1752

Published: 30 April 2020

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

Priority

Low

Cvss 3 Severity Score

7.0

Score breakdown

Status

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

eoan Does not exist

focal Does not exist

trusty Needed

upstream Needs triage

xenial Does not exist

impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

glibc
Launchpad, Ubuntu, Debian
bionic
Released (2.27-3ubuntu1.2)
eoan
Released (2.30-0ubuntu2.2)
focal Not vulnerable
(2.31-0ubuntu9)
trusty Does not exist

upstream Needs triage

xenial
Released (2.23-0ubuntu11.2)
impish Not vulnerable
(2.31-0ubuntu9)
groovy Not vulnerable
(2.31-0ubuntu9)
hirsute Not vulnerable
(2.31-0ubuntu9)
jammy Not vulnerable
(2.31-0ubuntu9)
kinetic Not vulnerable
(2.31-0ubuntu9)
lunar Not vulnerable
(2.31-0ubuntu9)
mantic Not vulnerable
(2.31-0ubuntu9)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ddc650e9b3dc916eab417ce9f79e67337b05035c

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H