Vulnerability Name:

CVE-2009-0787 (CCN-49355)

Assigned:2009-03-23
Published:2009-03-23
Updated:2023-02-13
Summary: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.
CVSS v3 Severity:4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)
3.7 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
1.6 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
1.9 Low (REDHAT CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N)
1.4 Low (REDHAT Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2009-0787

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Linux Kernel GIT Repository
eCryptfs: Allocate a variable number of pages for file headers

Source: CCN
Type: RHSA-2009-0473
Important: kernel security and bug fix update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: SA34422
Linux Kernel Information Disclosure and Security Bypass

Source: CCN
Type: SA36317
Avaya Products Linux Kernel Multiple Vulnerabilities

Source: CCN
Type: SECTRACK ID: 1022177
Linux Kernel Bug in ecryptfs_write_metadata_to_contents() Lets Local Users Obtain Portions of Kernel Memory

Source: CCN
Type: ASA-2009-167
kernel security and bug fix update (RHSA-2009-0473)

Source: CCN
Type: ASA-2009-277
kernel security and bug fix update (RHSA-2009-1132)

Source: secalert@redhat.com
Type: Vendor Advisory
secalert@redhat.com

Source: CCN
Type: OSVDB ID: 52860
Linux Kernel eCryptfs ecryptfs_write_metadata_to_contents Function Arbitrary Kernel Memory Disclosure

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: BID-34216
Linux Kernel 'ecryptfs_write_metadata_to_contents()' Information Disclosure Vulnerability

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: Vendor Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-ecryptfs-information-disclosure(49355)

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:5::client:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:5::server:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:2.6.28:-:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
  • OR cpe:/a:avaya:message_networking:3.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:5:*:client:*:*:*:*:*
  • OR cpe:/a:avaya:communication_manager:-:*:*:*:*:*:*:*
  • OR cpe:/a:avaya:sip_enablement_services:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:29446
    P
    		RHSA-2009:0473 -- kernel security and bug fix update (Important)
    2015-08-17
    oval:org.mitre.oval:def:22879
    P
    		ELSA-2009:0473: kernel security and bug fix update (Important)
    2014-05-26
    oval:org.mitre.oval:def:8319
    V
    		VMware kernel ecryptfs_write_metadata_to_contents function vulnerability
    2014-01-20
    oval:org.mitre.oval:def:11068
    V
    		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.
    2013-04-29
    oval:com.redhat.rhsa:def:20090473
    P
    		RHSA-2009:0473: kernel security and bug fix update (Important)
    2009-05-07
    BACK
    linux linux kernel 2.6.28
    redhat enterprise linux 5
    avaya message networking 3.1
    redhat enterprise linux 5
    avaya communication manager -
    avaya sip enablement services *