Linux Kernel up to 2.6.23 mm/shmem.c shmem_getpage resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $0-$5k | 0.00 |
A vulnerability has been found in Linux Kernel up to 2.6.23 (Operating System) and classified as critical. Affected by this vulnerability is the function shmem_getpage
of the file mm/shmem.c. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
The shmem_getpage function (mm/shmem.c) in Linux kernel 2.6.11 through 2.6.23 does not properly clear allocated memory in some rare circumstances related to tmpfs, which might allow local users to read sensitive kernel data or cause a denial of service (crash).
The issue has been introduced in 03/02/2005. The weakness was shared 11/28/2007 by Hugh Dickins (Website). It is possible to read the advisory at ubuntu.com. This vulnerability is known as CVE-2007-6417 since 12/17/2007. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/30/2021).
The vulnerability was handled as a non-public zero-day exploit for at least 1001 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67747 (Oracle Linux 5 : kernel (ELSA-2008-0885)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117245 (CentOS Security Update for Kernel (CESA-2008:0885)).
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 X-Force (39413) and Tenable (67747).
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.4VulDB Meta Temp Score: 8.4
VulDB Base Score: 8.4
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 67747
Nessus Name: Oracle Linux 5 : kernel (ELSA-2008-0885)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍
OpenVAS ID: 60047
OpenVAS Name: Debian Security Advisory DSA 1436-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
03/02/2005 🔍11/28/2007 🔍
11/28/2007 🔍
12/17/2007 🔍
12/17/2007 🔍
12/21/2007 🔍
02/08/2008 🔍
02/12/2008 🔍
04/06/2008 🔍
07/12/2013 🔍
03/16/2015 🔍
07/30/2021 🔍
Sources
Vendor: kernel.orgAdvisory: ubuntu.com
Researcher: Hugh Dickins
Status: Not defined
CVE: CVE-2007-6417 (🔍)
OVAL: 🔍
X-Force: 39413
Vulnerability Center: 17584 - Linux kernel 2.6.11 - 2.6.23 shmem_getpage Function Local Kernel Data Disclosure and DoS, Medium
SecurityFocus: 27694 - Linux Kernel 'tmpfs' filesystem Local Security Vulnerability
Secunia: 28141 - Debian update for kernel, Less Critical
OSVDB: 44120 - Linux Kernel mm/shmem.c shmem_getpage Function Arbitrary Memory Disclosure
Entry
Created: 03/16/2015 13:43Updated: 07/30/2021 08:14
Changes: 03/16/2015 13:43 (70), 08/19/2017 09:53 (12), 07/30/2021 08:14 (3)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.