CVE-2020-4829

View on CVE.org

Published Dec 10, 2020 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Description

IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960.

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

IBM

VIOS

affected

Version	Status	Constraints
`3.1`	affected	—

IBM

AIX

affected

Version	Status	Constraints
`7.1`	affected	—
`7.2`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:ibm:vios:3.1:::::::*
	cpe:2.3:o:ibm:aix:7.1:::::::*
	cpe:2.3:o:ibm:aix:7.2:::::::*

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-2020-26076	IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.351% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://exchange.xforce.ibmcloud.com/vulnerabilities/189960
https://www.ibm.com/support/pages/node/6380430

History

No history.

Subscriptions

Ibm Aix Vios

Weaknesses

NVD-CWE-noinfo

Sources

CVE record Updated: Sep 16, 2024, 6:04 PM

Status: PUBLISHED
Assigner: ibm
Published: Dec 10, 2020, 10:11 PM
Updated: Sep 16, 2024, 6:04 PM
Reserved: Dec 30, 2019, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:20 AM

Status: Modified
Published: Dec 10, 2020, 11:15 PM
Modified: Jun 17, 2026, 3:20 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "VIOS", "vendor": "IBM", "versions": [{"status": "affected", "version": "3.1"}]}, {"product": "AIX", "vendor": "IBM", "versions": [{"status": "affected", "version": "7.1"}, {"status": "affected", "version": "7.2"}]}], "datePublic": "2020-12-09T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 7.3, "temporalSeverity": "HIGH", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AC:L/PR:N/A:H/I:H/AV:L/S:U/UI:N/C:H/RL:O/RC:C/E:U", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"description": "Gain Privileges", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-12-10T22:11:07.000Z", "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://www.ibm.com/support/pages/node/6380430"}, {"name": "ibm-aix-cve20204829-priv-escalation (189960)", "tags": ["vdb-entry", "x_refsource_XF"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/189960"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@us.ibm.com", "DATE_PUBLIC": "2020-12-09T00:00:00", "ID": "CVE-2020-4829", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "VIOS", "version": {"version_data": [{"version_value": "3.1"}]}}, {"product_name": "AIX", "version": {"version_data": [{"version_value": "7.1"}, {"version_value": "7.2"}]}}]}, "vendor_name": "IBM"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960."}]}, "impact": {"cvssv3": {"BM": {"A": "H", "AC": "L", "AV": "L", "C": "H", "I": "H", "PR": "N", "S": "U", "UI": "N"}, "TM": {"E": "U", "RC": "C", "RL": "O"}}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Gain Privileges"}]}]}, "references": {"reference_data": [{"name": "https://www.ibm.com/support/pages/node/6380430", "refsource": "CONFIRM", "title": "IBM Security Bulletin 6380430 (AIX)", "url": "https://www.ibm.com/support/pages/node/6380430"}, {"name": "ibm-aix-cve20204829-priv-escalation (189960)", "refsource": "XF", "title": "X-Force Vulnerability Report", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/189960"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T08:14:58.424Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://www.ibm.com/support/pages/node/6380430"}, {"name": "ibm-aix-cve20204829-priv-escalation (189960)", "tags": ["vdb-entry", "x_refsource_XF", "x_transferred"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/189960"}]}]}, "cveMetadata": {"assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "assignerShortName": "ibm", "cveId": "CVE-2020-4829", "datePublished": "2020-12-10T22:11:07.430Z", "dateReserved": "2019-12-30T00:00:00.000Z", "dateUpdated": "2024-09-16T18:04:01.484Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "VIOS", "vendor": "IBM", "versions": [{"status": "affected", "version": "3.1"}]}, {"product": "AIX", "vendor": "IBM", "versions": [{"status": "affected", "version": "7.1"}, {"status": "affected", "version": "7.2"}]}], "source": "psirt@us.ibm.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ibm:vios:3.1:*:*:*:*:*:*:*", "matchCriteriaId": "6F61BE89-FBDE-4312-8422-86D1A9F57C9E", "vulnerable": true}, {"criteria": "cpe:2.3:o:ibm:aix:7.1:*:*:*:*:*:*:*", "matchCriteriaId": "0402E20C-8B41-4A2A-BFF9-92EC843985F0", "vulnerable": true}, {"criteria": "cpe:2.3:o:ibm:aix:7.2:*:*:*:*:*:*:*", "matchCriteriaId": "6791504A-A48A-4ED0-94AF-4C8A3B91516F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960."}, {"lang": "es", "value": "IBM AIX versiones 7.1, 7.2 y VIOS versi\u00f3n 3.1, podr\u00edan permitir a un usuario local explotar una vulnerabilidad en el comando de usuario ksu para obtener privilegios root. ID de IBM X-Force: 189960."}], "id": "CVE-2020-4829", "lastModified": "2026-06-17T03:20:31.310", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "psirt@us.ibm.com", "type": "Secondary"}], "cvssMetricV31": [{"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": "2020-12-10T23:15:13.677", "references": [{"source": "psirt@us.ibm.com", "tags": ["VDB Entry", "Vendor Advisory"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/189960"}, {"source": "psirt@us.ibm.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.ibm.com/support/pages/node/6380430"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["VDB Entry", "Vendor Advisory"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/189960"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.ibm.com/support/pages/node/6380430"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}