FKIE_CVE-2016-0736
Vulnerability from fkie_nvd - Published: 2017-07-27 21:29 - Updated: 2026-06-17 00:38
Severity
Summary
In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| apache | http_server | 2.4.0 | |
| apache | http_server | 2.4.1 | |
| apache | http_server | 2.4.2 | |
| apache | http_server | 2.4.3 | |
| apache | http_server | 2.4.6 | |
| apache | http_server | 2.4.7 | |
| apache | http_server | 2.4.8 | |
| apache | http_server | 2.4.9 | |
| apache | http_server | 2.4.10 | |
| apache | http_server | 2.4.12 | |
| apache | http_server | 2.4.14 | |
| apache | http_server | 2.4.16 | |
| apache | http_server | 2.4.19 | |
| apache | http_server | 2.4.20 | |
| apache | http_server | 2.4.21 | |
| apache | http_server | 2.4.22 | |
| apache | http_server | 2.4.23 |
{
"affected": [
{
"affectedData": [
{
"product": "Apache HTTP Server",
"vendor": "Apache Software Foundation",
"versions": [
{
"status": "affected",
"version": "2.4.0 to 2.4.23"
}
]
}
],
"source": "security@apache.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
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"vulnerable": true
},
{
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"vulnerable": true
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{
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"matchCriteriaId": "046487A3-752B-4D0F-8984-96486B828EAB",
"vulnerable": true
},
{
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},
{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC."
},
{
"lang": "es",
"value": "En Apache HTTP Server versiones 2.4.0 hasta 2.4.23, mod_session_crypto fue cifraba su cookie y datos utilizando los cifrados configurados posiblemente con los modos de operaci\u00f3n CBC o ECB (AES256-CBC por defecto), por lo tanto, no se puede seleccionar ni crear cifrado autenticado integrado. Esto lo hizo vulnerable a los ataques de tipo or\u00e1culo de relleno (padding oracle), particularmente con CBC."
}
],
"id": "CVE-2016-0736",
"lastModified": "2026-06-17T00:38:07.297",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-07-27T21:29:00.177",
"references": [
{
"source": "security@apache.org",
"url": "http://rhn.redhat.com/errata/RHSA-2017-1415.html"
},
{
"source": "security@apache.org",
"url": "http://www.debian.org/security/2017/dsa-3796"
},
{
"source": "security@apache.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/95078"
},
{
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],
"url": "http://www.securitytracker.com/id/1037508"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2017:0906"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2017:1161"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2017:1413"
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{
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"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-310"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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