CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.0	$0-$5k	0.00

A vulnerability was found in GNU grep up to 2.10. It has been classified as critical. This affects an unknown code block of the component Argument Handler. The manipulation with the input value perl -e 'print "x"x(2**31)' leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in GNU Grep before 2.11 might allow context-dependent attackers to execute arbitrary code via vectors involving a long input line that triggers a heap-based buffer overflow.

The weakness was published 12/17/2012 by Joshua Rogers as grep <2.11 is vulnerable to "Arbitrary command execution" as confirmed advisory (Website). It is possible to read the advisory at bugs.launchpad.net. The vendor was not involved in the public release. This vulnerability is uniquely identified as CVE-2012-5667 since 10/24/2012. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Joshua Rogers in Shell-Skript and been published immediately after the advisory. The exploit is shared for download at bugs.launchpad.net. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 73220 (GLSA-201403-07 : grep: User-assisted execution of arbitrary code), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350104 (Amazon Linux Security Advisory for grep: ALAS-2015-598).

Upgrading to version 2.11 eliminates this vulnerability. The upgrade is hosted for download at git.sv.gnu.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80811), Tenable (73220) and Exploit-DB (23779). Further details are available at savannah.gnu.org.

Productinfo

Vendor

• GNU

Name

• grep

Version

• 2.2
• 2.3
• 2.4
• 2.4.1
• 2.4.2
• 2.5
• 2.5.1
• 2.5.3
• 2.5.4
• 2.6
• 2.6.1
• 2.6.2
• 2.6.3
• 2.7
• 2.8
• 2.9
• 2.10

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Joshua Rogers
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 73220
Nessus Name: GLSA-201403-07 : grep: User-assisted execution of arbitrary code
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Reliability: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: grep 2.11

Timelineinfo

03/02/2012 🔍
03/02/2012 +0 days 🔍
10/24/2012 +236 days 🔍
12/17/2012 +54 days 🔍
12/17/2012 +0 days 🔍
12/17/2012 +0 days 🔍
12/26/2012 +9 days 🔍
12/31/2012 +5 days 🔍
01/03/2013 +3 days 🔍
06/17/2013 +165 days 🔍
03/27/2014 +283 days 🔍
04/20/2021 +2581 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: grep <2.11 is vulnerable to "Arbitrary command execution"
Researcher: Joshua Rogers
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-5667 (🔍)
X-Force: 80811
Vulnerability Center: 40036 - GNU Grep <2.11 Multiple Integer Overflows Allow Remote Code Execution - CVE-2012-5667, Medium
SecurityFocus: 57033 - grep CVE-2012-5667 Remote Integer Overflow Vulnerability
Secunia: 51666 - grep Long Line Handling Integer Overflow Vulnerability, Moderately Critical

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

Entryinfo

Created: 12/26/2012 12:35
Updated: 04/20/2021 13:32
Changes: 12/26/2012 12:35 (86), 05/03/2017 16:15 (5), 04/20/2021 13:32 (2)
Complete: 🔍

Discussion

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