CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, само при определена конфигурация или състояние на системата, с администраторски права и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
Use of a One-Way Hash with a Predictable Salt vulnerability in team-alembic AshAuthentication allows readers of the audit store to recover the client IP addresses that the audit log add-on's :hash privacy mode is meant to pseudonymise. AshAuthentication.AddOn.AuditLog.IpPrivacy.hash_ip/1 computes a single unkeyed :crypto.hash(:sha256, salt <> ip) and truncates the result to 16 hexadecimal characters. The salt is read from the :audit_log_ip_salt or :secret application config keys, and falls back to the constant "default-salt-change-in-production" published in the library source when neither is set, with nothing warning that the default is in use. The IPv4 space is only 2^32 values and SHA-256 is fast, so the whole hash table is precomputable and every stored value maps back to its source address. Truncating to 16 characters does not help, and even a configured salt leaves the hash cheap enough to enumerate once it leaks. This issue affects ash_authentication: from 4.12.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
Засегнати продукти
- team-alembic ash_authentication: 4.12.0 преди 4.15.0; 5.0.0-rc.0 преди 5.0.0-rc.14
- team-alembic ash_authentication: от 255cfc9c0e511b7e0de39f8b3d676ae994fae06c нататък
Вид слабост
История
- 17 септември 2026 Публикувано
Други уязвимости в team-alembic ash_authentication
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-82759
- https://nvd.nist.gov/vuln/detail/CVE-2026-82759
- https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-cgqj-pcpq-xhfm
- https://cna.erlef.org/cves/CVE-2026-82759.html
- https://osv.dev/vulnerability/EEF-CVE-2026-82759
- https://github.com/team-alembic/ash_authentication/commit/255cfc9c0e511b7e0de39f8b3d676ae994fae06c
- https://github.com/team-alembic/ash_authentication/commit/d8a9c4b6bde828fdc8346198d5e4f588b5937541
- https://github.com/team-alembic/ash_authentication/commit/c3a6d5fe0d4fd383ea81b0402db0a96638479478