CVE-2011-4080

Published May 24, 2012

Last updated 2 years ago

Overview

Description: The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.
Source: secalert@redhat.com
NVD status: Modified

Hype score: Not currently trending

Risk scores

CVSS 2.0

Type: Primary
Base score: 4
Impact score: 6.9
Exploitability score: 1.9
Vector string: AV:L/AC:H/Au:N/C:C/I:N/A:N

Weaknesses

nvd@nist.gov: CWE-264

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "176353CE-F17E-4776-AD9F-19014DA75B76",
            "versionEndExcluding": "2.6.39"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References