Remote Code Execution in Exim 4.85 through 4.92 (fixed in 4.92.1) via ${sort } Expansion

CVE-2019-13917 · HIGH Severity

AV:N/AC:L/AU:N/C:C/I:C/A:C

Exim 4.85 through 4.92 (fixed in 4.92.1) allows remote code execution as root in some unusual configurations that use the ${sort } expansion for items that can be controlled by an attacker (e.g., $local_part or $domain).

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