CVE-2018-16152

Name	CVE-2018-16152
Description	In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data in the digestAlgorithm.parameters field during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication. This is a variant of CVE-2006-4790 and CVE-2014-1568.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1522-1, DSA-4305-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
strongswan (PTS)	jessie, jessie (lts)	5.2.1-6+deb8u11	fixed
	stretch (security)	5.5.1-4+deb9u6	fixed
	stretch (lts), stretch	5.5.1-4+deb9u7	fixed
	buster (security), buster, buster (lts)	5.7.2-1+deb10u4	fixed
	bullseye (security), bullseye	5.9.1-1+deb11u4	fixed
	bookworm (security), bookworm	5.9.8-5+deb12u1	fixed
	sid, trixie	5.9.13-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
strongswan	source	wheezy	(unfixed)	end-of-life
strongswan	source	jessie	5.2.1-6+deb8u7		DLA-1522-1
strongswan	source	stretch	5.5.1-4+deb9u3		DSA-4305-1
strongswan	source	(unstable)	5.7.0-1

https://strongswan.org/blog/2018/09/24/strongswan-vulnerability-(cve-2018-16151,-cve-2018-16152).html