National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-16253 Detail

Current Description

In sig_verify() in x509.c in axTLS version 2.1.3 and before, the PKCS#1 v1.5 signature verification does not properly verify the ASN.1 metadata. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation through fake X.509 certificates. This is an even more permissive variant of CVE-2006-4790 and CVE-2014-1568.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.9 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/igrr/axtls-8266/commit/5efe2947ab45e81d84b5f707c51d1c64be52f36c Patch Third Party Advisory
https://sourceforge.net/p/axtls/mailman/message/36459928/ Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:axtls_project:axtls:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.1.3


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-16253
NVD Published Date:
11/07/2018
NVD Last Modified:
12/13/2018