CVE-2016-4422 (GCVE-0-2016-4422)
Vulnerability from cvelistv5 – Published: 2016-05-06 17:00 – Updated: 2024-08-06 00:32
VLAI
EPSS
VEX
Summary
The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2016/dsa-3567 | vendor-advisoryx_refsource_DEBIAN |
| https://bazaar.launchpad.net/~ltsp-upstream/ltsp/… | x_refsource_CONFIRM |
Date Public
2016-05-04 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-06T00:32:24.660Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "DSA-3567",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "http://www.debian.org/security/2016/dsa-3567"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"datePublic": "2016-05-04T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2016-05-06T16:57:01.000Z",
"orgId": "79363d38-fa19-49d1-9214-5f28da3f3ac5",
"shortName": "debian"
},
"references": [
{
"name": "DSA-3567",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "http://www.debian.org/security/2016/dsa-3567"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@debian.org",
"ID": "CVE-2016-4422",
"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": "The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "DSA-3567",
"refsource": "DEBIAN",
"url": "http://www.debian.org/security/2016/dsa-3567"
},
{
"name": "https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c",
"refsource": "CONFIRM",
"url": "https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "79363d38-fa19-49d1-9214-5f28da3f3ac5",
"assignerShortName": "debian",
"cveId": "CVE-2016-4422",
"datePublished": "2016-05-06T17:00:00.000Z",
"dateReserved": "2016-05-01T00:00:00.000Z",
"dateUpdated": "2024-08-06T00:32:24.660Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2016-4422",
"date": "2026-07-16",
"epss": "0.01803",
"percentile": "0.76062"
},
"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:libpam-sshauth_project:libpam-sshauth:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"AFF49CBF-35EE-41A9-93EA-DA9E0E64E5D0\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.\"}, {\"lang\": \"es\", \"value\": \"La funci\\u00f3n pam_sm_authenticate en pam_sshauth.c en libpam-sshauth podr\\u00eda permitir a atacantes dependientes de contexto eludir la autenticaci\\u00f3n u obtener privilegios a trav\\u00e9s de una cuenta de usuario de sistema.\"}]",
"id": "CVE-2016-4422",
"lastModified": "2024-11-21T02:52:08.020",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:C/I:C/A:C\", \"baseScore\": 10.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 10.0, \"impactScore\": 10.0, \"acInsufInfo\": true, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
"published": "2016-05-06T17:59:08.850",
"references": "[{\"url\": \"http://www.debian.org/security/2016/dsa-3567\", \"source\": \"security@debian.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c\", \"source\": \"security@debian.org\", \"tags\": [\"Broken Link\"]}, {\"url\": \"http://www.debian.org/security/2016/dsa-3567\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Broken Link\"]}]",
"sourceIdentifier": "security@debian.org",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2016-4422\",\"sourceIdentifier\":\"security@debian.org\",\"published\":\"2016-05-06T17:59:08.850\",\"lastModified\":\"2026-05-06T22:30:45.220\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n pam_sm_authenticate en pam_sshauth.c en libpam-sshauth podr\u00eda permitir a atacantes dependientes de contexto eludir la autenticaci\u00f3n u obtener privilegios a trav\u00e9s de una cuenta de usuario de sistema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":10.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":10.0,\"acInsufInfo\":true,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libpam-sshauth_project:libpam-sshauth:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AFF49CBF-35EE-41A9-93EA-DA9E0E64E5D0\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"}]}]}],\"references\":[{\"url\":\"http://www.debian.org/security/2016/dsa-3567\",\"source\":\"security@debian.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c\",\"source\":\"security@debian.org\",\"tags\":[\"Broken Link\"]},{\"url\":\"http://www.debian.org/security/2016/dsa-3567\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\"]}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…