Linux Kernel lz4.c lzo1x_decompress_safe input validation

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.
5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel. This affects the function lzo1x_decompress_safe of the file lz4.c. This manipulation causes input validation. This vulnerability appears as CVE-2014-4611. There is no available exploit. This vulnerability has a historic impact because of its background and how it was received. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel (Operating System) (version now known). Affected by this vulnerability is the function lzo1x_decompress_safe of the file lz4.c. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 06/26/2014 by Ludvig Strigeus and Don A. Bailey as confirmed mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is known as CVE-2014-4611 since 06/23/2014. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/18/2022). Due to its background and reception, this vulnerability has a historic impact.

The vulnerability scanner Nessus provides a plugin with the ID 76726 (openSUSE Security Update : eet (openSUSE-SU-2014:0924-1)), 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 167336 (OpenSuSE Security Update for Linux Kernel (openSUSE-SU-2014:1677-1)).

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (94010), Tenable (76726), SecurityFocus (BID 68218†), Secunia (SA59770†) and SecurityTracker (ID 1030491†). See VDB-66982, VDB-67259 and VDB-67260 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 76726
Nessus Name: openSUSE Security Update : eet (openSUSE-SU-2014:0924-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 206204a1162b995e2185275167b22468c00d6b36

Timelineinfo

06/23/2014 🔍
06/26/2014 +3 days 🔍
06/26/2014 +0 days 🔍
06/26/2014 +0 days 🔍
06/29/2014 +3 days 🔍
06/30/2014 +1 days 🔍
07/03/2014 +3 days 🔍
07/11/2014 +8 days 🔍
07/24/2014 +13 days 🔍
03/24/2015 +243 days 🔍
01/18/2022 +2492 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 206204a1162b995e2185275167b22468c00d6b36
Researcher: Ludvig Strigeus, Don A. Bailey
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-4611 (🔍)
GCVE (CVE): GCVE-0-2014-4611
GCVE (VulDB): GCVE-100-65953

OVAL: 🔍

X-Force: 94010 - Linux Kernel lzo1x_decompress_safe integer overflow, Medium Risk
SecurityFocus: 68218 - LZ4 'lz4.c' Memory Corruption Vulnerability
Secunia: 59770 - Horde Groupware Webmail Edition Security Issue and Multiple Vulnerabilities, Moderately Critical
SecurityTracker: 1030491 - Linux Kernel Integer Overflow in LZ4_decompress_generic() May Let Remote Users Execute Arbitrary Code in Certain Cases
Vulnerability Center: 45150 - Linux Kernel Local DoS and Code Execution due to Integer Overflow in LZ4_decompress_generic, Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/18/2022 13:36
Changes: 03/24/2015 15:54 (84), 05/31/2017 09:14 (3), 01/18/2022 13:30 (6), 01/18/2022 13:36 (1)
Complete: 🔍
Cache ID: 216:12E:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!