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MitreCVE-2020-21677

HistoryAug 10, 2021 - 9:15 p.m.

CVE-2020-21677

2021-08-1021:15:07

CWE-787

mitre

web.nvd.nist.gov

cve-2020-21677

libsixel

buffer overflow

denial of service

png

sixel format

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

42.9%

JSON

A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.

Affected configurations

Nvd

Node

libsixel_projectlibsixelMatch1.8.4

VendorProductVersionCPE
libsixel_projectlibsixel1.8.4cpe:2.3:a:libsixel_project:libsixel:1.8.4:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
libsixel_project	libsixel	1.8.4	cpe:2.3:a:libsixel_project:libsixel:1.8.4:::::::*

References

github.com/saitoha/libsixel/issues/123

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

42.9%

JSON

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