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Alpine Linux Development TeamALPINE:CVE-2021-28905

HistoryMay 20, 2021 - 7:15 p.m.

CVE-2021-28905

2021-05-2019:15:07

Alpine Linux Development Team

security.alpinelinux.org

libyang

vulnerability

lys_node_free

cwe-617

unix

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.7%

JSON

In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can’t be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).

OSVersionArchitecturePackageVersionFilename
Alpine3.13-communitynoarchlibyang< 1.0.184-r1UNKNOWN
Alpine3.14-communitynoarchlibyang< 1.0.215-r1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Alpine	3.13-community	noarch	libyang	< 1.0.184-r1	UNKNOWN
Alpine	3.14-community	noarch	libyang	< 1.0.215-r1	UNKNOWN

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.7%

JSON

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