#VU29222 Improper Verification of Cryptographic Signature in jsrsasign - CVE-2020-14968

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Main Vulnerability Database Vulnerabilities #VU29222

#VU29222 Improper Verification of Cryptographic Signature in jsrsasign - CVE-2020-14968

Published: June 24, 2020


Vulnerability identifier: #VU29222
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-14968
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
jsrsasign
Software vendor:
Restaumatic

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending "\0" bytes to a signature. A remote attacker can create multiple valid signatures and prepend these bytes with the goal of triggering memory corruption issues.


Remediation

Install updates from vendor's website.

External links