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CVE-2020-23914

Good to know:

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Date: April 21, 2021

An issue was discovered in cpp-peglib through v0.1.12. A NULL pointer dereference exists in the peg::AstOptimizer::optimize() located in peglib.h. It allows an attacker to cause Denial of Service.

Language: C++

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2020-23914
https://github.com/yhirose/cpp-peglib/issues/121
https://security-tracker.debian.org/tracker/CVE-2020-23914
https://github.com/yhirose/cpp-peglib/commit/0061f393de54cf0326621c079dc2988336d1ebb3
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-23914
https://www.mend.io/vulnerability-database/CVE-2020-23914

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

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

CVSS v2

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

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