7.8
HIGH
CVE-2012-6711
GNU Bash Heap-Based Buffer Overflow
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().

INFO

Published Date :

June 18, 2019, 6:15 p.m.

Last Modified :

Nov. 7, 2023, 2:13 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2012-6711 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2012-6711 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gnu bash
1 Redhat enterprise_linux
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2012-6711.

URL Resource
http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5 Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/108824
https://bugzilla.redhat.com/show_bug.cgi?id=1721071 Issue Tracking Third Party Advisory
https://support.f5.com/csp/article/K05122252
https://support.f5.com/csp/article/K05122252?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4180-1/

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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Updated: 1 year, 8 months ago
1 stars 0 fork 0 watcher
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revl-ca/scan-docker-image

None

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Updated: 5 years, 2 months ago
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Born at : July 18, 2019, 10:49 p.m. This repo has been linked 124 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2012-6711 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2012-6711 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://support.f5.com/csp/article/K05122252?utm_source=f5support&amp%3Butm_medium=RSS [No types assigned]
    Removed Reference MITRE https://support.f5.com/csp/article/K05122252?utm_source=f5support&utm_medium=RSS
  • CVE Modified by [email protected]

    Nov. 11, 2019

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4180-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 MITRE AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added Reference https://support.f5.com/csp/article/K05122252?utm_source=f5support&utm_medium=RSS [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 07, 2019

    Action Type Old Value New Value
    Added Reference https://support.f5.com/csp/article/K05122252 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 20, 2019

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/108824 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 19, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5 No Types Assigned http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5 Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1721071 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1721071 Issue Tracking, Third Party Advisory
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:a:gnu:bash:*:*:*:*:*:*:*:* versions from (including) 4.2 up to (including) 4.3
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS30 - Vulnerability Scoring System
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