CVE-2018-16253

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

published November 7, 2018

CVSS
—
EPSS
1%
Percentile
48.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00618 · 48.7th percentile
Published
2018-11-07T20:00Z
EPSS history
Timeline
  • 07 NOV 20:00Z
    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
    cvelistv5