Information disclosure in Linux kernel

1) Information disclosure

EUVDB-ID: #VU30814

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18550

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

Exploit availability: No

Description

The vulnerability allows a local authenticated user to gain access to sensitive information.

An issue was discovered in drivers/scsi/aacraid/commctrl.c in the Linux kernel before 4.13. There is potential exposure of kernel stack memory because aac_get_hba_info does not initialize the hbainfo structure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.0 - 4.12.14

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.0.8:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342ffc26693b528648bdc9377e51e4f2450b4860

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.