289 lines
14 KiB
JSON
289 lines
14 KiB
JSON
{
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"containers": {
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"cna": {
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"affected": [
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{
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"product": "matrix-ios-sdk",
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"vendor": "matrix-org",
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"versions": [
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{
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"status": "affected",
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"version": "< 0.23.19"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, 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. matrix-ios-sdk version 0.23.19 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. To avoid malicious backup attacks, one should not verify one's new logins using emoji/QR verifications methods until patched."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 8.6,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
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"version": "3.1"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-322",
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"description": "CWE-322: Key Exchange without Entity Authentication",
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"lang": "en",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-287",
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"description": "CWE-287: Improper Authentication",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"dateUpdated": "2022-09-28T20:35:10.000Z",
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M"
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},
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"references": [
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients"
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},
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{
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-hw6g-j8v6-9hcm"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/matrix-ios-sdk/commit/5ca86c328a5faaab429c240551cb9ca8f0f6262c"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/matrix-ios-sdk/releases/tag/v0.23.19"
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}
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],
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"source": {
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"advisory": "GHSA-hw6g-j8v6-9hcm",
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"discovery": "UNKNOWN"
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},
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"title": "Matrix iOS SDK vulnerable ton Olm/Megolm protocol confusion",
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"x_legacyV4Record": {
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"CVE_data_meta": {
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"ASSIGNER": "security-advisories@github.com",
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"ID": "CVE-2022-39255",
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"STATE": "PUBLIC",
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"TITLE": "Matrix iOS SDK vulnerable ton Olm/Megolm protocol confusion"
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"product": {
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"product_data": [
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{
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"product_name": "matrix-ios-sdk",
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"version": {
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"version_data": [
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{
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"version_value": "< 0.23.19"
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}
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}
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]
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},
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"vendor_name": "matrix-org"
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}
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},
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"data_format": "MITRE",
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"data_type": "CVE",
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"data_version": "4.0",
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, 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. matrix-ios-sdk version 0.23.19 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. To avoid malicious backup attacks, one should not verify one's new logins using emoji/QR verifications methods until patched."
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}
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]
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},
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"impact": {
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"cvss": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 8.6,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
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"version": "3.1"
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}
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "CWE-322: Key Exchange without Entity Authentication"
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}
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]
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},
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{
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"description": [
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{
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"lang": "eng",
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"value": "CWE-287: Improper Authentication"
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}
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]
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}
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]
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},
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"references": {
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"reference_data": [
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{
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"name": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients",
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"refsource": "MISC",
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"url": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients"
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},
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{
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"name": "https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-hw6g-j8v6-9hcm",
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"refsource": "CONFIRM",
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"url": "https://github.com/matrix-org/matrix-ios-sdk/security/advisories/GHSA-hw6g-j8v6-9hcm"
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},
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{
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"name": "https://github.com/matrix-org/matrix-ios-sdk/commit/5ca86c328a5faaab429c240551cb9ca8f0f6262c",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/matrix-ios-sdk/commit/5ca86c328a5faaab429c240551cb9ca8f0f6262c"
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},
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{
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"name": "https://github.com/matrix-org/matrix-ios-sdk/releases/tag/v0.23.19",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/matrix-ios-sdk/releases/tag/v0.23.19"
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}
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]
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},
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"source": {
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"advisory": "GHSA-hw6g-j8v6-9hcm",
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"discovery": "UNKNOWN"
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}
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}
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},
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"adp": [
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{
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-03T12:00:43.331Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"tags": [
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"x_refsource_MISC",
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],
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"url": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients"
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2025-04-23T15:50:43.338509Z",
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"id": "CVE-2022-39255",
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"options": [
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{
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"Exploitation": "none"
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{
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"Technical Impact": "partial"
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"title": "CISA ADP Vulnrichment",
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"state": "PUBLISHED"
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} |