CVE-2018-17540

Gentoo Linux Security Advisory 201811-16

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.

El plugin gmp en strongSwan en versiones anteriores a la 5.7.1 tiene un desbordamiento de búfer mediante un certificado manipulado.

An update that fixes one vulnerability is now available. This update for strongswan fixes the following issues. Strongswan was updated to version 5.8.2. Fixed a DoS vulnerability in the parser for PKCS#1 RSASSA-PSS signatures that was caused by insufficient input validation.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-09-26 CVE Reserved
2018-10-02 CVE Published
2024-08-05 CVE Updated
2025-06-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (9)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2018/10/msg00001.html	Mailing List
https://www.strongswan.org/blog/2018/10/01/strongswan-vulnerability-%28cve-2018-17540%29.html	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://download.strongswan.org/security/CVE-2018-17540	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html	2023-11-07
https://security.gentoo.org/glsa/201811-16	2023-11-07
https://usn.ubuntu.com/3774-1	2023-11-07
https://www.debian.org/security/2018/dsa-4309	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Strongswan Search vendor "Strongswan"		Strongswan Search vendor "Strongswan" for product "Strongswan"				< 5.7.1 Search vendor "Strongswan" for product "Strongswan" and version " < 5.7.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected