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Auto-merge PR#3163
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CVE Team 2020-01-30 15:05:24 -05:00 committed by GitHub
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2020/5xxx/CVE-2020-5229.json
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{
"data_type": "CVE",
"data_format": "MITRE",
"data_version": "4.0",
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2020-5229",
"ASSIGNER": "cve@mitre.org",
"STATE": "RESERVED"
"STATE": "PUBLIC",
"TITLE": "Opencast stores passwords using outdated MD5 hash algorithm"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "opencast",
"version": {
"version_data": [
{
"version_value": "< 8.1"
}
]
}
}
]
},
"vendor_name": "opencast"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
"value": "\nOpencast before 8.1 stores passwords using the rather outdated and cryptographically insecure MD5 hash algorithm.\nFurthermore, the hashes are salted using the username instead of a random salt, causing hashes for users with the same username and password to collide which is problematic especially for popular users like the default `admin` user.\n\nThis essentially means that for an attacker, it might be feasible to reconstruct a user's password given access to these hashes.\n\nNote that attackers needing access to the hashes means that they must gain access to the database in which these are stored first to be able to start cracking the passwords.\n\nThe problem is addressed in Opencast 8.1 which now uses the modern and much stronger bcrypt password hashing algorithm for storing passwords. Note, that old hashes remain MD5 until the password is updated.\n\nFor a list of users whose password hashes are stored using MD5, take a look at the `/user-utils/users/md5.json` REST endpoint."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-327: Use of a Broken or Risky Cryptographic Algorithm"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/opencast/opencast/security/advisories/GHSA-h362-m8f2-5x7c",
"refsource": "CONFIRM",
"url": "https://github.com/opencast/opencast/security/advisories/GHSA-h362-m8f2-5x7c"
},
{
"name": "https://github.com/opencast/opencast/commit/32bfbe5f78e214e2d589f92050228b91d704758e",
"refsource": "MISC",
"url": "https://github.com/opencast/opencast/commit/32bfbe5f78e214e2d589f92050228b91d704758e"
}
]
},
"source": {
"advisory": "GHSA-h362-m8f2-5x7c",
"discovery": "UNKNOWN"
}
}
}