GNU Bash up to 3.2.48 redir_stack memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNU Bash and classified as critical. This affects the function redir_stack. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2014-7186. Moreover, an exploit is present. This vulnerability is considered historic because of its background and reception. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in GNU Bash. This affects the function redir_stack. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 09/26/2014 by Todd Sabin (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2014-7186 since 09/25/2014. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/01/2024). Due to its background and reception, this vulnerability has a historic impact.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 78002 (FreeBSD : bash -- out-of-bounds memory access in parser (4a4e9f88-491c-11e4-ae2c-c80aa9043978)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350825 (Amazon Linux Security Advisory for bash: AL2012-2014-006 (ShellShock)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (96237), Exploit-DB (34860), Tenable (78002), SecurityFocus (BID 70152†) and Secunia (SA61479†). Further details are available at bugzilla.redhat.com. The entries VDB-67708, VDB-68866, VDB-68867 and VDB-71528 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Red Hat Enterprise Linux 5/6

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78002
Nessus Name: FreeBSD : bash -- out-of-bounds memory access in parser (4a4e9f88-491c-11e4-ae2c-c80aa9043978)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 863058
OpenVAS Name: GNU Bash Stacked Redirects aka redir_stack Memory Corruption Vulnerability (LSC)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

09/25/2014 🔍
09/25/2014 +0 days 🔍
09/26/2014 +1 days 🔍
09/28/2014 +2 days 🔍
09/29/2014 +1 days 🔍
09/30/2014 +1 days 🔍
10/01/2014 +1 days 🔍
10/01/2014 +0 days 🔍
12/01/2024 +3714 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-2364-1
Researcher: Todd Sabin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-7186 (🔍)
GCVE (CVE): GCVE-0-2014-7186
GCVE (VulDB): GCVE-100-67707

OVAL: 🔍
IAVM: 🔍

X-Force: 96237 - GNU Bash redir_stack code execution, Medium Risk
SecurityFocus: 70152 - GNU Bash CVE-2014-7186 Local Memory Corruption Vulnerability
Secunia: 61479 - SUSE update for bash, Highly Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/29/2014 09:54
Updated: 12/01/2024 04:04
Changes: 09/29/2014 09:54 (84), 05/02/2019 18:16 (7), 02/21/2022 08:14 (4), 02/21/2022 08:16 (1), 12/01/2024 04:04 (23)
Complete: 🔍
Cache ID: 216:989:103

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