SB2022091211 - SUSE update for libyang

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Main Vulnerability Database SB2022091211

SB2022091211 - SUSE update for libyang

Published: September 12, 2022

Security Bulletin ID SB2022091211
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Unchecked Return Value (CVE-ID: CVE-2021-28902)

CWE-ID: CWE-252 - Unchecked Return Value

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an unchecked return value in the "read_yin_container()" function. A remote attacker can run a specially crafted program to cause a denial of service condition.


2) Uncontrolled Recursion (CVE-ID: CVE-2021-28903)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an uncontrolled recursion in the "lyxml_parse_elem()" function. A remote attacker can cause a denial of service condition on the target system.


3) Unchecked Return Value (CVE-ID: CVE-2021-28904)

CWE-ID: CWE-252 - Unchecked Return Value

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an unchecked return value in the "ext_get_plugin()" function. A remote attacker can run a specially crafted program to cause a denial of service condition.


4) Unchecked Return Value (CVE-ID: CVE-2021-28906)

CWE-ID: CWE-252 - Unchecked Return Value

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an unchecked return value in the "read_yin_leaf()" function. A remote attacker can run a specially crafted program to cause a denial of service condition.


Remediation

Install update from vendor's website.

References