CVE-2020-25577

Published Mar 29, 2021

Last updated 3 years ago

CVSS critical 9.8

Overview

Description: In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 rtsold(8) does not verify that the RDNSS option does not extend past the end of the received packet before processing its contents. While the kernel currently ignores such malformed packets, it passes them to userspace programs. Any programs expecting the kernel to do validation may be vulnerable to an overflow.
Source: secteam@freebsd.org
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

CVSS 2.0

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

Weaknesses

nvd@nist.gov: CWE-120

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
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            "vulnerable": true,
            "matchCriteriaId": "4A865EA1-01D7-4E5A-9D13-80780F8A9D7A"
          },
          {
            "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "9FCA6A72-2A72-45FD-A43D-B5BF7C329121"
          },
          {
            "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "90F9B3CB-3B60-4AA8-9EAF-4F0BE7D27691"
          },
          {
            "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "C04EE177-C7D1-4049-B680-F961A27C677F"
          },
          {
            "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "BD730B6A-F123-4685-ACB3-4F20AAAB77F3"
          },
          {
            "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*",
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          },
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            "criteria": "cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*",
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            "vulnerable": true,
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          {
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            "vulnerable": true,
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          },
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            "vulnerable": true,
            "matchCriteriaId": "73D9C08B-8F5B-40C4-A5BD-B00D2E4C012D"
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        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Social media

Configurations

References