Information disclosure in Dell PowerSwitch SmartFabric OS10

1) Information disclosure

EUVDB-ID: #VU19946

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-1125

CWE-ID: CWE-200 - Information exposure

Exploit availability: Yes

Description

The vulnerability allows a local user to gain access to potentially sensitive information and elevate privileges on the system.

The vulnerability exists when certain central processing units (CPU) speculatively access memory. A local user can gain unauthorized access to sensitive information and elevate privileges on the system.

This issue is a variant of the Spectre Variant 1 speculative execution side channel vulnerability that leverages SWAPGS instructions to bypass KPTI/KVA mitigations.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Dell PowerSwitch SmartFabric OS10: before 10.5.0.3

CPE2.3

• cpe:2.3:a:dell:dell_powerswitch_smartfabric_os10:*:*:*:*:*:*:*:*

External links

https://www.dell.com/support/kbdoc/en-us/000123304/dsa-2020-008-dell-emc-networking-security-update-for-a-powerswitch-smartfabric-os10-vulnerability

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.