CVE-2018-5388
In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
Does this matter?
Lower severity and a low EPSS score (3.92%). Track it; it rarely justifies an emergency change on its own.
Description
In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.92% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-124, CWE-787
- Affected
- strongswan/strongswan · debian/debian linux · canonical/ubuntu linux
- Source
- cret@cert.org
EPSS 3.9% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html
- http://packetstormsecurity.com/files/172833/strongSwan-VPN-Charon-Server-Buffer-Overflow.html
- http://www.kb.cert.org/vuls/id/338343Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/104263Third Party Advisory, VDB Entry
- https://git.strongswan.org/?p=strongswan.git%3Ba=commitdiff%3Bh=0acd1ab4
- https://security.gentoo.org/glsa/201811-16Third Party Advisory
- https://usn.ubuntu.com/3771-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4229Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html
- http://packetstormsecurity.com/files/172833/strongSwan-VPN-Charon-Server-Buffer-Overflow.html
- http://www.kb.cert.org/vuls/id/338343Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/104263Third Party Advisory, VDB Entry
- https://git.strongswan.org/?p=strongswan.git%3Ba=commitdiff%3Bh=0acd1ab4
- https://security.gentoo.org/glsa/201811-16Third Party Advisory
- https://usn.ubuntu.com/3771-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4229Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.