CVE-2021-25684 - Vulnerability Details - OpenCVE

Description

It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO.

Published: 2021-06-11

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

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

Vendor Product Default status Versions

Canonical

apport

affected

Version	Status	Constraints
`2.20.1`	affected	< 2.20.1-0ubuntu2.30
`2.20.9`	affected	< 2.20.9-0ubuntu7.23
`2.20.11-0ubuntu27`	affected	< 2.20.11-0ubuntu27.16
`2.20.11-0ubuntu50`	affected	< 2.20.11-0ubuntu50.5

Configuration 1 [-]

OR	cpe:2.3:a:canonical:apport::::::::
	cpe:2.3:a:canonical:apport::::::::
	cpe:2.3:a:canonical:apport::::::::
	cpe:2.3:a:canonical:apport::::::::

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-12576	It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO.
Ubuntu USN	USN-4720-1	Apport vulnerabilities
Ubuntu USN	USN-4720-2	Apport vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00045.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://seclists.org/fulldisclosure/2025/Jun/9
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326

History

Mon, 03 Nov 2025 20:30:00 +0000

Type	Values Removed	Values Added
References		http://seclists.org/fulldisclosure/2025/Jun/9

Subscriptions

Canonical Apport

MITRE

Status: PUBLISHED

Assigner: canonical

Published: 2021-06-11T02:20:20.510Z

Updated: 2025-11-03T19:25:41.029Z

Reserved: 2021-01-21T00:00:00.000Z

Link: CVE-2021-25684

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-06-11T03:15:06.977

Modified: 2025-11-03T20:15:45.953

Link: CVE-2021-25684

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

{"containers": {"cna": {"affected": [{"product": "apport", "vendor": "Canonical", "versions": [{"lessThan": "2.20.1-0ubuntu2.30", "status": "affected", "version": "2.20.1", "versionType": "custom"}, {"lessThan": "2.20.9-0ubuntu7.23", "status": "affected", "version": "2.20.9", "versionType": "custom"}, {"lessThan": "2.20.11-0ubuntu27.16", "status": "affected", "version": "2.20.11-0ubuntu27", "versionType": "custom"}, {"lessThan": "2.20.11-0ubuntu50.5", "status": "affected", "version": "2.20.11-0ubuntu50", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Itai Greenhut"}], "datePublic": "2021-02-02T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "CWE-20 Improper Input Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-06-11T02:20:20.000Z", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"}], "source": {"advisory": "https://ubuntu.com/security/notices/USN-4720-1", "defect": ["https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"], "discovery": "EXTERNAL"}, "title": "apport can be stalled by reading a FIFO", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@ubuntu.com", "DATE_PUBLIC": "2021-02-02T00:00:00.000Z", "ID": "CVE-2021-25684", "STATE": "PUBLIC", "TITLE": "apport can be stalled by reading a FIFO"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "apport", "version": {"version_data": [{"version_affected": "<", "version_name": "2.20.1", "version_value": "2.20.1-0ubuntu2.30"}, {"version_affected": "<", "version_name": "2.20.9", "version_value": "2.20.9-0ubuntu7.23"}, {"version_affected": "<", "version_name": "2.20.11-0ubuntu27", "version_value": "2.20.11-0ubuntu27.16"}, {"version_affected": "<", "version_name": "2.20.11-0ubuntu50", "version_value": "2.20.11-0ubuntu50.5"}]}}]}, "vendor_name": "Canonical"}]}}, "credit": [{"lang": "eng", "value": "Itai Greenhut"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-20 Improper Input Validation"}]}]}, "references": {"reference_data": [{"name": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326", "refsource": "MISC", "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"}]}, "source": {"advisory": "https://ubuntu.com/security/notices/USN-4720-1", "defect": ["https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"], "discovery": "EXTERNAL"}}}, "adp": [{"title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"}, {"url": "http://seclists.org/fulldisclosure/2025/Jun/9"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:25:41.029Z"}}]}, "cveMetadata": {"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "assignerShortName": "canonical", "cveId": "CVE-2021-25684", "datePublished": "2021-06-11T02:20:20.510Z", "dateReserved": "2021-01-21T00:00:00.000Z", "dateUpdated": "2025-11-03T19:25:41.029Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*", "matchCriteriaId": "1FDEF7B7-318E-4C9B-AA8B-79157E87B4EF", "versionEndExcluding": "2.20.1-0ubuntu2.30", "versionStartIncluding": "2.20.1-0ubuntu1", "vulnerable": true}, {"criteria": "cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC812359-24A5-4F7D-ABC6-15DB3062967A", "versionEndExcluding": "2.20.9-0ubuntu7.23", "versionStartIncluding": "2.20.9-0ubuntu1", "vulnerable": true}, {"criteria": "cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*", "matchCriteriaId": "194F4E58-D4CB-4B34-8166-858CC0AF7B59", "versionEndExcluding": "2.20.11-0ubuntu27.16", "versionStartIncluding": "2.20.11-0ubuntu27", "vulnerable": true}, {"criteria": "cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*", "matchCriteriaId": "5778434C-41A2-4B08-BC76-9203B7FAB094", "versionEndExcluding": "2.20.11-0ubuntu50.5", "versionStartIncluding": "2.20.11-0ubuntu50", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO."}, {"lang": "es", "value": "Se descubri\u00f3 que apport en data/apport no abr\u00eda correctamente un archivo de informes para evitar lecturas colgadas en un FIFO"}], "id": "CVE-2021-25684", "lastModified": "2025-11-03T20:15:45.953", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "security@ubuntu.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-11T03:15:06.977", "references": [{"source": "security@ubuntu.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://seclists.org/fulldisclosure/2025/Jun/9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "security@ubuntu.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}