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CVE-2021-28903

Date: May 20, 2021

A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem(). lyxml_parse_elem() function will be called recursively, which will consume stack space and lead to crash.

Language: C

Severity Score

Related Resources (8)

https://security.gentoo.org/glsa/202107-54
https://github.com/CESNET/libyang/issues/1453
https://access.redhat.com/security/cve/CVE-2021-28903
https://security-tracker.debian.org/tracker/CVE-2021-28903
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-28903
https://security.alpinelinux.org/vuln/CVE-2021-28903
https://nvd.nist.gov/vuln/detail/CVE-2021-28903
https://www.mend.io/vulnerability-database/CVE-2021-28903

Severity Score

Weakness Type (CWE)

Uncontrolled Recursion

CWE-674

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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