#VU15670 Information disclosure in Linux kernel - CVE-2018-18710

Vulnerability identifier: #VU15670

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-18710

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists in the cdrom_ioctl_select_disc function, as defined in the drivers/cdrom/cdrom.c source code file due to boundary error when processing of user-supplied input. A local attacker can access the system, execute an application that submits malicious input to read arbitrary kernel memory on the system, which could be used to conduct additional attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.15.0 rc4 - 4.19

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External links
https://github.com/torvalds/linux/commit/e4f3aa2e1e67bb48dfbaaf1cad59013d5a5bc276

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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.