Vulnerability Monitor

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CVE-2018-16152

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.

Published

2018-09-26T21:29:01.197

Last Modified

2024-11-21T03:52:10.783

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-347

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	strongswan	strongswan	≤ 4.6.4	Yes
Application	strongswan	strongswan	< 5.7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html ([email protected])
https://lists.debian.org/debian-lts-announce/2018/09/msg00032.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201811-16 Third Party Advisory ([email protected])
https://usn.ubuntu.com/3771-1/ Third Party Advisory ([email protected])
https://www.debian.org/security/2018/dsa-4305 Third Party Advisory ([email protected])
https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/09/msg00032.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201811-16 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3771-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2018/dsa-4305 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.html (af854a3a-2127-422b-91ae-364da2661108)