PT-2018-13427

CVE-2018-16149

·

Published

2018-11-07

·

Updated

2019-01-31

Description by

CVSS 3.1
5.9
Medium
MetricsAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions axTLS version 2.1.3 and earlier
Description The issue concerns the sig verify() function in x509.c, where the PKCS#1 v1.5 signature verification process blindly trusts the declared lengths in the ASN.1 structure. This can be exploited by a remote attacker using small public exponents to generate crafted signatures for X.509 certificates, potentially causing illegal memory access and crashing the verifier.
Recommendations For axTLS version 2.1.3 and earlier, at the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploitability
Exploit
Impacts
Vendors
Affected products
Related identifiers
Found an issue in the description? Have something to add? Feel free to write us 👾