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FreebsdCVE-2020-7461

HistoryMar 26, 2021 - 9:15 p.m.

CVE-2020-7461

2021-03-2621:15:13

CWE-787

freebsd

web.nvd.nist.gov

freebsd

dhclient

heap overflow

remote code execution

cve-2020-7461

security vulnerability

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

AI Score

7.7

Confidence

High

EPSS

0.005

Percentile

76.0%

JSON

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.

Affected configurations

Nvd

Node

freebsdfreebsdMatch11.3-

freebsdfreebsdMatch11.3p1

freebsdfreebsdMatch11.3p10

freebsdfreebsdMatch11.3p11

freebsdfreebsdMatch11.3p12

freebsdfreebsdMatch11.3p2

freebsdfreebsdMatch11.3p3

freebsdfreebsdMatch11.3p4

freebsdfreebsdMatch11.3p5

freebsdfreebsdMatch11.3p6

freebsdfreebsdMatch11.3p7

freebsdfreebsdMatch11.3p8

freebsdfreebsdMatch11.3p9

freebsdfreebsdMatch11.4-

freebsdfreebsdMatch11.4p1

freebsdfreebsdMatch11.4p2

freebsdfreebsdMatch12.1-

freebsdfreebsdMatch12.1p1

freebsdfreebsdMatch12.1p2

freebsdfreebsdMatch12.1p3

freebsdfreebsdMatch12.1p4

freebsdfreebsdMatch12.1p5

freebsdfreebsdMatch12.1p6

freebsdfreebsdMatch12.1p7

freebsdfreebsdMatch12.1p8

Node

siemenssimatic_rf350mMatch-

AND

siemenssimatic_rf350m_firmware

Node

siemenssimatic_rf650m_firmware

AND

siemenssimatic_rf650mMatch-

VendorProductVersionCPE
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p11:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p12:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*
freebsdfreebsd11.3cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*

Vendor	Product	Version	CPE
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:-::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p1::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p10::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p11::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p12::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p2::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p3::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p4::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p5::::::
freebsd	freebsd	11.3	cpe:2.3:o:freebsd:freebsd:11.3:p6::::::

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CNA Affected

[
  {
    "product": "FreeBSD",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13"
      }
    ]
  }
]