PT-2019-10097 · Linux · Linux Kernel

Fuqian Huang · Published 2019-04-30 · Updated 2019-05-17 · CVE-2018-20509

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Linux kernel version 4.14.90

Description: The issue concerns the print binder ref olocked function in the Linux kernel, which allows local users to obtain sensitive address information. This is achieved by reading specific lines in a debugfs file, namely "ref *desc *node" lines.

Recommendations: For Linux kernel version 4.14.90, consider restricting access to the debugfs file to minimize the risk of exploitation. As a temporary workaround, limiting the ability of local users to read sensitive information from the debugfs file may help mitigate the issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2018-20509

Affected Products

Linux Kernel

References · 11

• 🔥 https://github.com/Yellow-Pay/CVE/blob/master/CVE-2018-20509.md · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20509 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20509 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20509 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20509 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20509 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20509 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20509 · Security Note
• https://mail-archive.com/[e-mail]/msg03902.html · Note
• https://security.netapp.com/advisory/ntap-20190517-0002 · Note
• https://mail-archive.com/debian-security-tracker%40lists.debian.org/msg03902.html · Note