vulnerability
Arch Linux: Denial of service (CVE-2018-5388)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:L/Au:S/C:N/I:N/A:P) | May 31, 2018 | Jul 11, 2025 | Mar 25, 2026 |
Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
May 31, 2018
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
strongSwan VPN's charon server prior to version 5.6.3 is missing a packet length check in stroke_socket.c, allowing a buffer overflow which may lead to resource exhaustion and denial of service while reading from the socket.
According to the vendor, an attacker must typically have local root permissions to access the socket. However, other accounts and groups such as the vpn group (if capability dropping in enabled, for example) may also have sufficient permissions, but this configuration does not appear to be the default behavior.
According to the vendor, an attacker must typically have local root permissions to access the socket. However, other accounts and groups such as the vpn group (if capability dropping in enabled, for example) may also have sufficient permissions, but this configuration does not appear to be the default behavior.
Solution
arch-linux-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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