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cve[email protected]CVE-2021-30855
HistoryAug 24, 2021 - 7:15 p.m.

CVE-2021-30855

2021-08-2419:15:14
CWE-59
[email protected]
web.nvd.nist.gov
81
cve-2021-30855
symlink
security update
catalina
ios 14.8
ipados 14.8
ios 15
ipados 15
watchos 8
macos big sur 11.6
file access

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.3

Confidence

Low

EPSS

0.001

Percentile

36.3%

JSON

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files.

Affected configurations

Vulners
NVD
Node
macosRange<11.6
OR
macosRange<14.8
VendorProductVersionCPE
applemacos*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
applemacos*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "macOS",
    "vendor": "Apple",
    "versions": [
      {
        "lessThan": "11.6",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "macOS",
    "vendor": "Apple",
    "versions": [
      {
        "lessThan": "2021",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "macOS",
    "vendor": "Apple",
    "versions": [
      {
        "lessThan": "14.8",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "macOS",
    "vendor": "Apple",
    "versions": [
      {
        "lessThan": "15",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "macOS",
    "vendor": "Apple",
    "versions": [
      {
        "lessThan": "8",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

Related

nvd 1
prion 1
cvelist 1
nessus 2
apple 6
openvas 2
nvd
nvd
CVE-2021-30855
2021-08-24 19:15:14
prion
prion
Input validation
2021-08-24 19:15:00
cvelist
cvelist
CVE-2021-30855
2021-08-24 18:49:21
nessus
nessus
macOS 11.x < 11.6 (HT212804)
2021-09-16 00:00:00
macOS 10.15.x < Catalina Security Update 2021-005 Catalina (HT212805)
2021-09-16 00:00:00
apple
apple
About the security content of iOS 14.8 and iPadOS 14.8
2021-09-13 00:00:00
About the security content of Security Update 2021-005 Catalina
2021-09-13 00:00:00
About the security content of watchOS 8
2021-09-20 00:00:00
openvas
openvas
Apple Mac OS X Security Update (HT212805)
2021-09-14 00:00:00
Apple Mac OS X Security Update (HT212804)
2021-09-14 00:00:00

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.3

Confidence

Low

EPSS

0.001

Percentile

36.3%

JSON
Related for CVE-2021-30855
nvd1prion1cvelist1nessus2apple6openvas2