Secret encryption vulnerable to brute-force attacks
Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers with a copy of a user's data are able to brute-force the user's encryption key. Users on version 8.0.0 and above are automatically migrated away from the weak encoding on first login. Users should destroy encrypted backups made with versions prior to 8.0.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-45394
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 08:40 UTC · Revision 1
Source evidence
Secret encryption vulnerable to brute-force attacks
core-osv · Original sourcePublished 3 Sept 2024, 20:15 UTC
Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers with a copy of a user's data are able to brute-force the user's encryption key. Users on version 8.0.0 and above are automatically migrated away from the weak encoding on first login. Users should destroy encrypted backups made with versions prior to 8.0.0.
osv:CVE-2024-45394
Complete source record
{
"id": "5774b29cf493fed5f836bf2cad175ee6059a4e742ba0b01197a5b2743f1c09c3",
"url": "https://osv.dev/vulnerability/CVE-2024-45394",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Secret encryption vulnerable to brute-force attacks",
"summary": "Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers with a copy of a user's data are able to brute-force the user's encryption key. Users on version 8.0.0 and above are automatically migrated away from the weak encoding on first login. Users should destroy encrypted backups made with versions prior to 8.0.0.",
"evidence": "osv:CVE-2024-45394",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2024-45394",
"aliases": [
"CVE-2024-45394",
"GHSA-gv8m-vgp8-q2xr"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/authenticator-extension/authenticator",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2cf9b0ff3014bf5db88a3e834e7a2c2c54c96410"
},
{
"fixed": "17aa2068553db3c3aac081c9ffe393536f33b28b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:authenticator:authenticator:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "8.0.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "17aa2068553db3c3aac081c9ffe393536f33b28b"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v6.3.1",
"v6.3.0",
"v6.2.1",
"v6.2.0",
"v6.1.0",
"v6.0.1",
"v6.0.0",
"v5.3.2",
"v5.3.1",
"v5.3.0",
"v5.2.2",
"v5.2.1",
"v5.2.0",
"v5.1.1",
"v5.1.0",
"v5.0.10",
"v5.0.9",
"v5.0.8",
"v5.0.7",
"v5.0.6",
"v5.0.5",
"v5.0.4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-45394.json"
}
}
],
"modified": "2026-10-28T02:30:50.345849841Z",
"provider": "osv",
"references": [
"https://github.com/Authenticator-Extension/Authenticator/security/advisories/GHSA-gv8m-vgp8-q2xr",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45394.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-45394",
"https://github.com/Authenticator-Extension/Authenticator/commit/17aa2068553db3c3aac081c9ffe393536f33b28b"
],
"provider_metadata": {
"cwe_ids": [
"CWE-261",
"CWE-327"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45394.json"
}
},
"related_cves": [
{
"value": "CVE-2024-45394",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518776,
"published_at": "2024-09-03T20:15:42.769+00:00"
}