Information exposure through log files in Linux kernel usb serial driver

1) Information exposure through log files

EUVDB-ID: #VU92440

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-2017-5549

CWE-ID: CWE-532 - Information Exposure Through Log Files

Exploit availability: No

Description

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

The vulnerability exists due to information exposure through log files error within the klsi_105_get_line_state() function in drivers/usb/serial/kl5kusb105.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=146cc8a17a3b4996f6805ee5c080e7101277c410
https://www.debian.org/security/2017/dsa-3791
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5
https://www.openwall.com/lists/oss-security/2017/01/21/3
https://www.securityfocus.com/bid/95715
https://bugzilla.redhat.com/show_bug.cgi?id=1416114
https://github.com/torvalds/linux/commit/146cc8a17a3b4996f6805ee5c080e7101277c410
https://usn.ubuntu.com/3754-1/

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.