Linux Kernel eCryptfs headers information disclosure
| linux-kernel-ecryptfs-information-disclosure (49355) |  Low Risk |
Description:
Linux Kernel could allow a remote attacker to obtain sensitive information, caused by an error when storing eCryptfs headers. A local attacker could exploit this vulnerability to obtain kernel memory and other sensitive information.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | None |
| Availability Impact: | None |
| Temporal Score: | 1.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Obtain Information
Remedy:
Apply the patch for this vulnerability, available from the Linux Kernel GIT Repository. See References.
References:
- ASA-2009-277: kernel security and bug fix update (RHSA-2009-1132).
- Linux Kernel GIT Repository: eCryptfs: Allocate a variable number of pages for file headers.
- ASA-2009-167: kernel security and bug fix update (RHSA-2009-0473)
- BID-34216: Linux Kernel 'ecryptfs_write_metadata_to_contents()' Information Disclosure Vulnerability
- CVE-2009-0787: The ecryptfs_write_metadata_to_contents function in the eCryptfs functionality in the Linux kernel 2.6.28 before 2.6.28.9 uses an incorrect size when writing kernel memory to an eCryptfs file header, which triggers an out-of-bounds read and allows local users to obtain portions of kernel memory.
- RHSA-2009-0473: Important: kernel security and bug fix update
- SA34422: Linux Kernel Information Disclosure and Security Bypass
- SA36317: Avaya Products Linux Kernel Multiple Vulnerabilities
- SECTRACK ID: 1022177: Linux Kernel Bug in ecryptfs_write_metadata_to_contents() Lets Local Users Obtain Portions of Kernel Memory
- VUPEN/ADV-2009-0802: Linux Kernel Security Bypass and Information Disclosure Vulnerabilities
- VUPEN/ADV-2009-3316: VMware Products Multiple Code Execution and Security Bypass Issues
Platforms Affected:
- Avaya Application Enablement Services 4.0
- Avaya Communication Manager
- Avaya Intuity Audix LX 2.0
- Avaya Message Networking 3.1
- Avaya Message Storage Server 3.0
- Avaya Message Storage Server 4.0
- Avaya SIP Enablement Services
- Linux Kernel 2.6.28
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5.3.z EUS
- RedHat Enterprise Linux Long Life 5.3
Reported:
Mar 11, 2009
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.