CVE-2021-20215

View on CVE.org

Published Mar 25, 2021 CVSS 3.1 · 7.5 High EPSS 2.3% KEV · Not listed

Description

A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory allocations fail can lead to a system crash.

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

privoxy

affected

Version	Status	Constraints
`Privoxy 3.0.29`	affected	—

Configuration 1 [-]

cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:*

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
Debian DLA	DLA-2548-1	privoxy security update
EUVD	EUVD-2021-7658	A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory allocations fail can lead to a system crash.
Ubuntu USN	USN-4886-1	Privoxy vulnerabilities

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 Complete

This CVE is not in the KEV list.

Exploit prediction score: 2.3% (2.252% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugzilla.redhat.com/show_bug.cgi?id=1928746
https://security.gentoo.org/glsa/202107-16
https://www.privoxy.org/3.0.29/user-manual/whatsnew.html

History

No history.

Subscriptions

Privoxy Privoxy

Weaknesses

CWE-401

Sources

CVE record Updated: Aug 3, 2024, 5:30 PM

Status: PUBLISHED
Assigner: redhat
Published: Mar 25, 2021, 6:57 PM
Updated: Aug 3, 2024, 5:30 PM
Reserved: Dec 17, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:33 AM

Status: Modified
Published: Mar 25, 2021, 7:15 PM
Modified: Jun 17, 2026, 3:33 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "privoxy", "vendor": "n/a", "versions": [{"status": "affected", "version": "Privoxy 3.0.29"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory allocations fail can lead to a system crash."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-401", "description": "CWE-401", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-07-08T06:06:39.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746"}, {"name": "GLSA-202107-16", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202107-16"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2021-20215", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "privoxy", "version": {"version_data": [{"version_value": "Privoxy 3.0.29"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory allocations fail can lead to a system crash."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-401"}]}]}, "references": {"reference_data": [{"name": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html", "refsource": "MISC", "url": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html"}, {"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746"}, {"name": "GLSA-202107-16", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202107-16"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:30:07.356Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746"}, {"name": "GLSA-202107-16", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202107-16"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-20215", "datePublished": "2021-03-25T18:57:41.000Z", "dateReserved": "2020-12-17T00:00:00.000Z", "dateUpdated": "2024-08-03T17:30:07.356Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "privoxy", "vendor": "n/a", "versions": [{"status": "affected", "version": "Privoxy 3.0.29"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:*", "matchCriteriaId": "0C2D9175-6366-48B3-BE07-97C0C153D2EC", "versionEndExcluding": "3.0.29", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory allocations fail can lead to a system crash."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en Privoxy en versiones anteriores a 3.0.29. Unas p\u00e9rdidas de memoria en el manejador CGI show-status cuando un fallo de las asignaciones de memoria puede conllevar a un bloqueo del sistema"}], "id": "CVE-2021-20215", "lastModified": "2026-06-17T03:33:29.153", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "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": "2021-03-25T19:15:13.127", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202107-16"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1928746"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202107-16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.privoxy.org/3.0.29/user-manual/whatsnew.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Secondary"}]}