PT-2026-71632 · Rsync · Rsync
CVSS v4.0
6.9
Medium
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
rsync versions prior to 3.5.0
Description
A logic error exists in the handling of the
--max-alloc configuration. When a sender or configuration sets --max-alloc=0, allocation sanity checks are entirely disabled instead of enforcing a zero-byte cap. This allows an attacker to force the receiver to perform unbounded memory allocations for data structures and file lists, which can exhaust available memory and lead to a denial of service.Recommendations
Update rsync to version 3.5.0 or later.
Exploit
Fix
DoS
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Weakness Enumeration
Related Identifiers
Affected Products
Rsync