CVE-2021-33641 - Vulnerability Details - OpenCVE

When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00035.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Openeuler	Byacc

Configuration 1 [-]

OR	cpe:2.3:a:openeuler:byacc::::::::
	cpe:2.3:a:openeuler:byacc::::::::

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gitee.com/src-openeuler/byacc/commit/50225f48c6b53e9d7c936681a06682404cb8ec4d
https://nvd.nist.gov/vuln/detail/CVE-2021-33641
https://www.cve.org/CVERecord?id=CVE-2021-33641

History

Thu, 03 Apr 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: openEuler

Published: 2023-01-20T00:00:00.000Z

Updated: 2025-04-03T20:03:08.779Z

Reserved: 2021-05-28T00:00:00.000Z

Link: CVE-2021-33641

Vulnrichment

Updated: 2024-08-03T23:58:21.542Z

NVD

Status : Modified

Published: 2023-01-20T21:15:10.803

Modified: 2025-04-03T20:15:16.000

Link: CVE-2021-33641

Redhat

Severity : Moderate

Publid Date: 2022-05-28T00:00:00Z

Links: CVE-2021-33641 - Bugzilla

OpenCVE Enrichment

No data.

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