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.
02 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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.91% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.0% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-05-31 00:00Z8 YR AGO
- Last updated
- 2024-08-05 05:33Z2 YR AGO
- Reserved
- 2018-01-12
- Assigning CNA
- certcc
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 18f655e47d071aaacffe93e26fd3d1150b73677311f9a01687bdab59510a7cfd
05 Affected products
06 References
- www.kb.cert.orgVU#338343http://www.kb.cert.org/vuls/id/338343
- security.gentoo.orgGLSA-201811-16https://security.gentoo.org/glsa/201811-16
- git.strongswan.orghttps://git.strongswan.org/?p=strongswan.git%3Ba=commitdiff%3Bh=0acd1ab4
- www.securityfocus.com104263http://www.securityfocus.com/bid/104263
- usn.ubuntu.comUSN-3771-1https://usn.ubuntu.com/3771-1/
- www.debian.orgDSA-4229https://www.debian.org/security/2018/dsa-4229
- lists.opensuse.orgopenSUSE-SU-2019:2594http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
- lists.opensuse.orgopenSUSE-SU-2019:2598http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html
- lists.opensuse.orgopenSUSE-SU-2020:0403http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/172833/strongSwan-VPN-Charon-Server-Buffer-Overflow.html
07 Fixed in
Arch Linux
- strongswan Fixed in 5.6.2-2
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- strongswan Fixed in 5.6.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- strongswan Fixed in 5.6.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- strongswan Fixed in 5.6.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- strongswan Fixed in 5.1.2-0ubuntu2.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- strongswan Fixed in 5.3.5-1ubuntu3.7
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- strongswan Fixed in 5.6.2-1ubuntu2.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.