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FreebsdCVE-2021-29626

HistoryApr 07, 2021 - 3:15 p.m.

CVE-2021-29626

2021-04-0715:15:13

CWE-416

freebsd

web.nvd.nist.gov

cve-2021-29626

freebsd

copy-on-write logic

vulnerability

security

data leakage

nvd

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.3

Confidence

High

EPSS

Percentile

5.1%

JSON

In FreeBSD 13.0-STABLE before n245117, 12.2-STABLE before r369551, 11.4-STABLE before r369559, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, copy-on-write logic failed to invalidate shared memory page mappings between multiple processes allowing an unprivileged process to maintain a mapping after it is freed, allowing the process to read private data belonging to other processes or the kernel.

Affected configurations

Nvd

Node

freebsdfreebsdRange<11.4

freebsdfreebsdRange12.0–12.2

freebsdfreebsdMatch11.4-

freebsdfreebsdMatch11.4beta1

freebsdfreebsdMatch11.4p1

freebsdfreebsdMatch11.4p2

freebsdfreebsdMatch11.4p3

freebsdfreebsdMatch11.4p4

freebsdfreebsdMatch11.4p5

freebsdfreebsdMatch11.4rc1

freebsdfreebsdMatch11.4rc2

freebsdfreebsdMatch12.2-

freebsdfreebsdMatch12.2p1

freebsdfreebsdMatch12.2p2

freebsdfreebsdMatch13.0beta1

freebsdfreebsdMatch13.0beta2

freebsdfreebsdMatch13.0beta3

freebsdfreebsdMatch13.0beta4

freebsdfreebsdMatch13.0rc1

freebsdfreebsdMatch13.0rc2

freebsdfreebsdMatch13.0rc3

freebsdfreebsdMatch13.0rc4

freebsdfreebsdMatch13.0rc5

VendorProductVersionCPE
freebsdfreebsd*cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:rc1:*:*:*:*:*:*
freebsdfreebsd11.4cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:*

Vendor	Product	Version	CPE
freebsd	freebsd	*	cpe:2.3:o:freebsd:freebsd::::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:-::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:beta1::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:p1::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:p2::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:p3::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:p4::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:p5::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:rc1::::::
freebsd	freebsd	11.4	cpe:2.3:o:freebsd:freebsd:11.4:rc2::::::

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CNA Affected

[
  {
    "product": "FreeBSD",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9"
      }
    ]
  }
]

References

security.FreeBSD.org/advisories/FreeBSD-SA-21:08.vm.asc

security.netapp.com/advisory/ntap-20210423-0008/

Social References

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.3

Confidence

High

EPSS

Percentile

5.1%

JSON

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