Improper Verification of Cryptographic Signature in jsrsasign - CVE-2020-14967
Published: June 24, 2020
Vulnerability identifier: #VU29224
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-14967
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending " " bytes to ciphertexts. A remote attacker can prepend these bytes with the goal of triggering memory corruption issues.
Affected software
jsrsasign
How to mitigate CVE-2020-14967
Install updates from vendor's website.
jsrsasign - update to 8.0.18