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MitreCVE-2021-40531

HistorySep 06, 2021 - 9:15 p.m.

CVE-2021-40531

2021-09-0621:15:07

CWE-434

mitre

web.nvd.nist.gov

cve

2021

40531

sketch

file quarantine

remote code execution

nvd

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

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.6

Confidence

High

EPSS

0.007

Percentile

80.9%

JSON

Sketch before 75 allows library feeds to be used to bypass file quarantine. Files are automatically downloaded and opened, without the com.apple.quarantine extended attribute. This results in remote code execution, as demonstrated by CommandString in a terminal profile to Terminal.app.

Affected configurations

Nvd

Node

sketchsketchRange<75

AND

applemacosMatch-

VendorProductVersionCPE
sketchsketch*cpe:2.3:a:sketch:sketch:*:*:*:*:*:*:*:*
applemacos-cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
sketch	sketch	*	cpe:2.3:a:sketch:sketch::::::::
apple	macos	-	cpe:2.3:o:apple:macos:-:::::::*

References

jonpalmisc.com/2021/11/22/cve-2021-40531

www.sketch.com/updates/#version-75

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

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.6

Confidence

High

EPSS

0.007

Percentile

80.9%

JSON

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