CVE-2020-21596

2021-09-1622:15:07

Alpine Linux Development Team

security.alpinelinux.org

libde265 buffer overflow decode_cabac_bit unix crafted file exploit

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

AI Score

7.5

Confidence

High

EPSS

0.003

Percentile

71.8%

JSON

libde265 v1.0.4 contains a global buffer overflow in the decode_CABAC_bit function, which can be exploited via a crafted a file.

OSVersionArchitecturePackageVersionFilename
Alpineedge-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.14-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.15-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.16-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.17-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.18-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.19-mainnoarchlibde265< 1.0.11-r0UNKNOWN
Alpine3.20-mainnoarchlibde265< 1.0.11-r0UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Alpine	edge-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.14-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.15-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.16-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.17-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.18-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.19-main	noarch	libde265	< 1.0.11-r0	UNKNOWN
Alpine	3.20-main	noarch	libde265	< 1.0.11-r0	UNKNOWN