CVE-2026-70453

Publié : 13 août 2026

Modifié : 13 août 2026

Score CVSS

7.5

HIGH

Description détaillée

rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Références et Patchs

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 https://github.com/RsyncProject/rsync/security/advisories/GHSA-8x5r-mjx8-83hv https://www.vulncheck.com/advisories/rsync-algorithmic-complexity-dos-via-hash-search

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