CVE-2016-4979
Vulnerability from cvelistv5
Published
2016-07-06 14:00
Modified
2024-08-06 00:46
Severity ?
EPSS score ?
Summary
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.
References
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"name": "http://packetstormsecurity.com/files/137771/Apache-2.4.20-X509-Authentication-Bypass.html",
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"url": "http://packetstormsecurity.com/files/137771/Apache-2.4.20-X509-Authentication-Bypass.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20180601-0001/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20180601-0001/"
},
{
"name": "[httpd-cvs] 20190815 svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
"refsource": "MLIST",
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{
"name": "[httpd-cvs] 20190815 svn commit: r1048742 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
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{
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{
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{
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{
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{
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{
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{
"name": "[httpd-cvs] 20210330 svn commit: r1073146 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.html",
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},
{
"name": "[httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
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}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2016-4979",
"datePublished": "2016-07-06T14:00:00",
"dateReserved": "2016-05-24T00:00:00",
"dateUpdated": "2024-08-06T00:46:39.899Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2016-4979\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2016-07-06T14:59:04.487\",\"lastModified\":\"2024-11-21T02:53:21.280\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the \\\"SSLVerifyClient require\\\" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.\"},{\"lang\":\"es\",\"value\":\"El servidor HTTP Apache 2.4.18 hasta la versi\u00f3n 2.4.20, cuando mod_http2 y mod_ssl est\u00e1n activados, no reconoce adecuadamente la directiva \\\"SSLVerifyClient require\\\" para autorizaci\u00f3n de petici\u00f3n HTTP/2, lo que permite a atacantes remotos eludir las restricciones destinadas al acceso aprovechando la capacidad de enviar m\u00faltiples peticiones sobre una sola conexi\u00f3n y abortar una renegociaci\u00f3n.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F2FB2B98-DFD2-420A-8A7F-9B288651242F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.4.19:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2AE538EE-7152-4DB5-AE45-614494CB7B95\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B803D25B-0A19-4569-BA05-09D58F33917C\"}]}]}],\"references\":[{\"url\":\"http://httpd.apache.org/security/vulnerabilities_24.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Vendor 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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.