CVE-2021-27799

View on CVE.org

Published Feb 26, 2021 CVSS 3.1 · 7.5 High EPSS 2.4% KEV · Not listed

Description

ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:zint:barcode_generator:2.9.1:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-14540	ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 2.4% (2.365% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://zint.org.uk/Manual.aspx?type=p&page=3
http://zint.org.uk/Manual.aspx?type=p&page=4
http://zint.org.uk/Manual.aspx?type=p&page=5
https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/
https://sourceforge.net/p/zint/tickets/218/

History

No history.

Subscriptions

Zint Barcode Generator

Weaknesses

CWE-787

Sources

CVE record Updated: Aug 3, 2024, 9:33 PM

Status: PUBLISHED
Assigner: mitre
Published: Feb 26, 2021, 9:31 PM
Updated: Aug 3, 2024, 9:33 PM
Reserved: Feb 26, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:45 AM

Status: Modified
Published: Feb 26, 2021, 10:15 PM
Modified: Jun 17, 2026, 3:45 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-03-01T00:20:24.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://sourceforge.net/p/zint/tickets/218/"}, {"tags": ["x_refsource_MISC"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=3"}, {"tags": ["x_refsource_MISC"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=4"}, {"tags": ["x_refsource_MISC"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=5"}, {"tags": ["x_refsource_MISC"], "url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-27799", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://sourceforge.net/p/zint/tickets/218/", "refsource": "MISC", "url": "https://sourceforge.net/p/zint/tickets/218/"}, {"name": "http://zint.org.uk/Manual.aspx?type=p&page=3", "refsource": "MISC", "url": "http://zint.org.uk/Manual.aspx?type=p&page=3"}, {"name": "http://zint.org.uk/Manual.aspx?type=p&page=4", "refsource": "MISC", "url": "http://zint.org.uk/Manual.aspx?type=p&page=4"}, {"name": "http://zint.org.uk/Manual.aspx?type=p&page=5", "refsource": "MISC", "url": "http://zint.org.uk/Manual.aspx?type=p&page=5"}, {"name": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/", "refsource": "MISC", "url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T21:33:15.888Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://sourceforge.net/p/zint/tickets/218/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=3"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=4"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=5"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-27799", "datePublished": "2021-02-26T21:31:44.000Z", "dateReserved": "2021-02-26T00:00:00.000Z", "dateUpdated": "2024-08-03T21:33:15.888Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zint:barcode_generator:2.9.1:*:*:*:*:*:*:*", "matchCriteriaId": "97B2F0DF-8C6E-487A-AE06-4EBBA3ED17DA", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code."}, {"lang": "es", "value": "La funci\u00f3n ean_leading_zeroes en el archivo backend/upcean.c en Zint Barcode Generator versi\u00f3n 2.19.1, presenta un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria que es accesible desde la API C por medio de una aplicaci\u00f3n que incluye el c\u00f3digo de la biblioteca Zint Barcode Generator"}], "id": "CVE-2021-27799", "lastModified": "2026-06-17T03:45:28.587", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-26T22:15:20.847", "references": [{"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=3"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=4"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=5"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sourceforge.net/p/zint/tickets/218/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://zint.org.uk/Manual.aspx?type=p&page=5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sourceforge.net/p/zint/tickets/218/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}