Linux Kernel 2.6.22.7 snd_mem_proc_read Count information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel 2.6.22.7 and classified as problematic. Affected by this vulnerability is the function snd_mem_proc_read. The manipulation of the argument Count leads to information disclosure. This vulnerability is documented as CVE-2007-4571. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.22.7 (Operating System). It has been rated as problematic. This issue affects the function snd_mem_proc_read. The manipulation of the argument count with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc.

The bug was discovered 09/25/2007. The weakness was released 09/26/2007 by DiGiT with digit-labs.org (Website). It is possible to read the advisory at vupen.com. The identification of this vulnerability is CVE-2007-4571 since 08/28/2007. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 80 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67595 (Oracle Linux 5 : kernel (ELSA-2007-0993)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155990 (Oracle Enterprise Linux Update for Kernel (ELSA-2007-0993)).

Upgrading to version 2.6.22.7 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (36780), Exploit-DB (30605), Tenable (67595), SecurityFocus (BID 25807†) and OSVDB (39234†). Entries connected to this vulnerability are available at VDB-3449 and VDB-39898. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67595
Nessus Name: Oracle Linux 5 : kernel (ELSA-2007-0993)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 60439
OpenVAS Name: Debian Security Advisory DSA 1505-1 (alsa-driver)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 2.6.22.7

Timelineinfo

07/08/2007 🔍
08/28/2007 +51 days 🔍
09/21/2007 +24 days 🔍
09/25/2007 +4 days 🔍
09/25/2007 +0 days 🔍
09/25/2007 +0 days 🔍
09/26/2007 +1 days 🔍
09/26/2007 +0 days 🔍
09/26/2007 +0 days 🔍
10/16/2007 +20 days 🔍
11/30/2007 +45 days 🔍
07/12/2013 +2051 days 🔍
03/16/2015 +612 days 🔍
12/31/2024 +3578 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: vupen.com⛔
Researcher: DiGiT
Organization: digit-labs.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-4571 (🔍)
GCVE (CVE): GCVE-0-2007-4571
GCVE (VulDB): GCVE-100-38951

OVAL: 🔍

X-Force: 36780
SecurityFocus: 25807 - Linux Kernel ALSA snd-page-alloc Local Proc File Information Disclosure Vulnerability
Secunia: 26918
OSVDB: 39234 - CVE-2007-4571 - Linux - Information Disclosure Issue
SecurityTracker: 1018734
Vulnerability Center: 16530 - Advanced Linux Sound Architecture (ALSA) in Linux Kernel < 2.6.22.8 Local Information Disclosure, Low
Vupen: ADV-2007-3272

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

Entryinfo

Created: 03/16/2015 12:18
Updated: 12/31/2024 02:18
Changes: 03/16/2015 12:18 (95), 07/27/2019 17:35 (5), 12/31/2024 02:18 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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