Strongswan Release Notes reports :

Fixed a DoS vulnerability in the parser for PKCS#1 RSASSA-PSS signatures that was caused by insufficient input validation. One of the configurable parameters in algorithm identifier structures for RSASSA-PSS signatures is the mask generation function (MGF). Only MGF1 is currently specified for this purpose. However, this in turn takes itself a parameter that specifies the underlying hash function.
strongSwan's parser did not correctly handle the case of this parameter being absent, causing an undefined data read. his vulnerability has been registered as CVE-2018-6459.

The remote host is affected by the vulnerability described in GLSA-201811-16 (strongSwan: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in strongSwan. Please       review the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could cause a Denial of Service condition or       impersonate a user.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Published	Updated	Severity
107111	FreeBSD : strongswan - Insufficient input validation in RSASSA-PSS signature parser (6a449a37-1570-11e8-8e00-000c294a5758)	Nessus	FreeBSD Local Security Checks	3/2/2018	11/10/2018	medium
119161	GLSA-201811-16 : strongSwan: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	11/27/2018	7/19/2024	high
135007	openSUSE Security Update : strongswan (openSUSE-2020-403)	Nessus	SuSE Local Security Checks	3/30/2020	3/20/2024	high
134852	SUSE SLED15 / SLES15 Security Update : strongswan (SUSE-SU-2020:0743-1)	Nessus	SuSE Local Security Checks	3/24/2020	3/21/2024	high

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