Information disclosure in Dell EMC Isilon OneFS

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU17860

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1559

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to decrypt sensitive information.

The vulnerability exists due to the way an application behaves, when it receives a 0-byte record with invalid padding compared to the record with an invalid MAC, which results in padding oracle. A remote attacker can decrypt data.

Successful exploitation of the vulnerability requires that the application is using "non-stitched" ciphersuites and calls SSL_shutdown() twice (first, via a BAD_RECORD_MAC and again via a CLOSE_NOTIFY). 

Mitigation

Install update from vendor's website.

Vulnerable software versions

EMC Isilon OneFS: All versions

CPE2.3

• cpe:2.3:a:dell:emc_isilon_onefs:*:*:*:*:*:*:*:*

External links

https://www.dell.com/support/kbdoc/en-us/000153866/dsa-2019-100-dell-emc-isilon-onefs-security-update-for-openssl-vulnerabilities

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.