CVE-2015-4171

strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an IKEv2 connection, does not enforce server authentication restrictions until the entire authentication process is complete, which allows remote servers to obtain credentials by using a valid certificate and then reading the responses.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
2.6 UNKNOWN
NETWORK
HIGH
AV:N/AC:H/Au:N/C:P/I:N/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 75%
VendorProductVersion
canonicalubuntu_linux
14.04
canonicalubuntu_linux
14.10
canonicalubuntu_linux
15.04
debiandebian_linux
8.0
strongswanstrongswan
4.3.0
strongswanstrongswan
4.3.1
strongswanstrongswan
4.3.2
strongswanstrongswan
4.3.3
strongswanstrongswan
4.3.4
strongswanstrongswan
4.3.5
strongswanstrongswan
4.3.6
strongswanstrongswan
4.3.7
strongswanstrongswan
4.4.0
strongswanstrongswan
4.4.1
strongswanstrongswan
4.5.0
strongswanstrongswan
4.5.1
strongswanstrongswan
4.5.2
strongswanstrongswan
4.5.3
strongswanstrongswan
4.6.0
strongswanstrongswan
4.6.1
strongswanstrongswan
4.6.2
strongswanstrongswan
4.6.3
strongswanstrongswan
4.6.4
strongswanstrongswan
5.0.0
strongswanstrongswan
5.0.1
strongswanstrongswan
5.0.2
strongswanstrongswan
5.0.3
strongswanstrongswan
5.0.4
strongswanstrongswan
5.1.0
strongswanstrongswan
5.1.1
strongswanstrongswan
5.1.2
strongswanstrongswan
5.1.3
strongswanstrongswan
5.2.0
strongswanstrongswan
5.2.1
strongswanstrongswan
5.2.2
strongswanstrongswan
5.2.3
strongswanstrongswan
5.3.0
strongswanstrongswan
5.3.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
strongswan
bullseye (security)
5.9.1-1+deb11u4
fixed
bullseye
5.9.1-1+deb11u4
fixed
bookworm
5.9.8-5+deb12u1
fixed
bookworm (security)
5.9.8-5+deb12u1
fixed
sid
5.9.13-2
fixed
trixie
5.9.13-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
strongswan
zesty
Fixed 5.1.2-0ubuntu6
released
yakkety
Fixed 5.1.2-0ubuntu6
released
xenial
Fixed 5.1.2-0ubuntu6
released
wily
Fixed 5.1.2-0ubuntu6
released
vivid
Fixed 5.1.2-0ubuntu5.2
released
utopic
Fixed 5.1.2-0ubuntu3.3
released
trusty
Fixed 5.1.2-0ubuntu2.3
released
precise
ignored