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CVE-2012-6711

Published: Jun 18, 2019Updated: Nov 21, 2024 Sources: CVE List NVDCWE-119
NVD MITRE
7.0CVSSHIGH
EPSS Score
0.5%
Top 61.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A heap-based buffer overflow exists in GNU Bash before 4.3 when wide characters, not supported by the current locale set in the LC_CTYPE environment variable, are printed through the echo built-in function. A local attacker, who can provide data to print through the "echo -e" built-in function, may use this flaw to crash a script or execute code with the privileges of the bash process. This occurs because ansicstr() in lib/sh/strtrans.c mishandles u32cconv().

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-119

Affected Products

bashgnuOSS Libraries
enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
n/an/a
gnuoss-projectUSOSS Librariesaka g. nu
redhatcommercialUSOperating Systemsaka red hat

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5
git.savannah.gnu.org
http://www.securityfocus.com/bid/108824
securityfocus.com
https://bugzilla.redhat.com/show_bug.cgi?id=1721071
bugzilla.redhat.com
and 3 more references View all →

Timeline

Published
Jun 18, 2019
Last Updated
Nov 21, 2024

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