Information disclosure in RSA BSAFE Crypto-J

1) Covert timing attack

EUVDB-ID: #VU14705

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-11070

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a network attacker to obtain potentially sensitive information.

The vulnerability exists due to covert time attack. A remote attacker can conduct a Bleichenbacher covert timing attack on PKCS #1 unpadding operations and obtain the RSA private key.

Mitigation

Update to version 6.2.4.

Vulnerable software versions

RSA BSAFE Crypto-C: 6.0 - 6.2.2

CPE2.3

• cpe:2.3:a:dell:rsa_bsafe_crypto-c:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:dell:rsa_bsafe_crypto-c:6.1:*:*:*:*:*:*:*
• cpe:2.3:a:dell:rsa_bsafe_crypto-c:6.1.1:*:*:*:*:*:*:*

External links

https://seclists.org/fulldisclosure/2018/Sep/7

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.