CVE-2009-1895

Published Jul 16, 2009

Last updated 2 years ago

Overview

Description: The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).
Source: secalert@redhat.com
NVD status: Modified

Hype score: Not currently trending

Risk scores

CVSS 2.0

Type: Primary
Base score: 7.2
Impact score: 10
Exploitability score: 3.9
Vector string: AV:L/AC:L/Au:N/C:C/I:C/A:C

Weaknesses

nvd@nist.gov: CWE-16

Configurations

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      {
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            "matchCriteriaId": "EA80C8C8-30E5-4DC6-B3CC-2BA506FBEC8D",
            "versionEndIncluding": "2.6.31"
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.31:rc1:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "29C4A364-ED36-4AC8-AD1E-8BD18DD9324D"
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.31:rc2:*:*:*:*:*:*",
            "vulnerable": true,
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          }
        ],
        "operator": "OR"
      }
    ]
  },
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            "vulnerable": true,
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          },
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          }
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        "operator": "OR"
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  },
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    "nodes": [
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        "cpeMatch": [
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          },
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]

Overview

Social media

Risk scores

CVSS 2.0

Weaknesses

Configurations

References