cvelist/2022/39xxx/CVE-2022-39251.json
2022-10-31 22:00:33 +00:00

111 lines
4.8 KiB
JSON

{
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2022-39251",
"STATE": "PUBLIC",
"TITLE": "Matrix Javascript SDK vulnerable to Olm/Megolm protocol confusion"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "matrix-js-sdk",
"version": {
"version_data": [
{
"version_value": "< 19.7.0"
}
]
}
}
]
},
"vendor_name": "matrix-org"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a sophisticated attacker cooperating with a malicious homeserver could employ this vulnerability to perform a targeted attack in order to send fake to-device messages appearing to originate from another user. This can allow, for example, to inject the key backup secret during a self-verification, to make a targeted device start using a malicious key backup spoofed by the homeserver. These attacks are possible due to a protocol confusion vulnerability that accepts to-device messages encrypted with Megolm instead of Olm. Starting with version 19.7.0, matrix-js-sdk has been modified to only accept Olm-encrypted to-device messages. Out of caution, several other checks have been audited or added. This attack requires coordination between a malicious home server and an attacker, so those who trust their home servers do not need a workaround."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-322: Key Exchange without Entity Authentication"
}
]
},
{
"description": [
{
"lang": "eng",
"value": "CWE-287: Improper Authentication"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76",
"refsource": "MISC",
"url": "https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76"
},
{
"name": "https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0",
"refsource": "MISC",
"url": "https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0"
},
{
"name": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients",
"refsource": "MISC",
"url": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients"
},
{
"name": "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-r48r-j8fx-mq2c",
"refsource": "CONFIRM",
"url": "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-r48r-j8fx-mq2c"
},
{
"refsource": "GENTOO",
"name": "GLSA-202210-35",
"url": "https://security.gentoo.org/glsa/202210-35"
}
]
},
"source": {
"advisory": "GHSA-r48r-j8fx-mq2c",
"discovery": "UNKNOWN"
}
}