mcrypt up to 2.6.8 extra.c check_file_head memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in mcrypt 2.6.4/2.6.5/2.6.6/2.6.7/2.6.8. Impacted is the function check_file_head of the file extra.c. This manipulation causes memory corruption. This vulnerability appears as CVE-2012-4409. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in mcrypt 2.6.4/2.6.5/2.6.6/2.6.7/2.6.8 and classified as critical. Affected by this vulnerability is the function check_file_head of the file extra.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the check_file_head function in extra.c in mcrypt 2.6.8 and earlier allows user-assisted remote attackers to execute arbitrary code via an encrypted file with a crafted header containing long salt data that is not properly handled during decryption.

The weakness was presented 11/21/2012 as Bug 855029 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2012-4409 since 08/21/2012. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed by Tosh in Python and been published 5 days after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 74781 (openSUSE Security Update : mcrypt (openSUSE-SU-2012:1354-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165321 (SUSE Security Update for mcrypt (openSUSE-SU-2012:1354-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (22928), Tenable (74781), SecurityFocus (BID 55425†), Secunia (SA50507†) and SecurityTracker (ID 1027532†). See VDB-63015 and VDB-63014 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
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
Author: Tosh
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74781
Nessus Name: openSUSE Security Update : mcrypt (openSUSE-SU-2012:1354-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 864716
OpenVAS Name: Fedora Update for mcrypt FEDORA-2012-13656
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/21/2012 🔍
09/06/2012 +16 days 🔍
09/14/2012 +8 days 🔍
10/11/2012 +27 days 🔍
11/21/2012 +41 days 🔍
11/21/2012 +0 days 🔍
11/26/2012 +5 days 🔍
11/26/2012 +0 days 🔍
06/13/2014 +564 days 🔍
03/24/2015 +284 days 🔍
12/29/2024 +3568 days 🔍

Sourcesinfo

Advisory: Bug 855029
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-4409 (🔍)
GCVE (CVE): GCVE-0-2012-4409
GCVE (VulDB): GCVE-100-63013
SecurityFocus: 55425
Secunia: 50507
SecurityTracker: 1027532 - MCrypt Stack Overflow Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 36490 - Mcrypt \x3C\x3D2.6.8 Stack Based Buffer Overflow via a Crafted .nc File Allows Arbitrary Code Execution, Medium

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

Entryinfo

Created: 03/24/2015 12:22
Updated: 12/29/2024 23:39
Changes: 03/24/2015 12:22 (62), 04/18/2017 11:10 (19), 12/20/2021 09:52 (3), 10/02/2024 02:55 (14), 12/29/2024 23:39 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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