CVE-2021-28903

2021-05-2415:13:24

redhat.com

access.redhat.com

libyang

remote attack

user-controlled xml

service availability

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

A flaw was found in libyang. An uncontrolled recursion in lyxml_parse_elem function allows a remote attacker to crash an application that uses libyang with user-controlled XML data. The highest threat from this vulnerability is the service availability.