CVE Tools
Sign in

CVE-2018-16152

Published: Sep 26, 2018Updated: Dec 3, 2025 Sources: CVE List NVDCWE-347
7.5HIGH
NVD MITRE
EPSS Score
1.9%
Top 23.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-347

Affected Products

n/an/a
strongswanstrongswan
On-prem
Networking Infrastructure / vpn-gateway
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
strongswanoss-projectNetworking Infrastructureaka strongman, strongswan vpn client
debianoss-projectGBOperating Systemsaka debian gnu/linux
canonicalcommercialGBOperating Systemsaka canonical ltd.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://www.debian.org/security/2018/dsa-4305
debian.org
https://security.gentoo.org/glsa/201811-16
security.gentoo.org
https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.html
strongswan.org
and 5 more references View all →

Timeline

Published
Sep 26, 2018
Last Updated
Dec 3, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2018-16152 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows