PT-2017-3048 · Linux+3 · Linux+3

Roee Hay + 1 · Published 2017-05-16 · Updated 2023-01-17 · CVE-2017-1000363

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux (affected versions not specified)

Description The issue is caused by a missing bounds check in the Linux kernel, specifically in the drivers/char/lp.c file. This allows an adversary with partial control over the kernel command line, potentially due to bootloader vulnerabilities, to overflow the parport nr array by appending multiple 'lp=none' arguments. The vulnerability can be exploited to cause a denial of service.

Recommendations For Linux, consider disabling the lp setup() function as a temporary workaround until a patch is available. Restrict access to the parport nr array to minimize the risk of exploitation. Avoid using the lp=none argument in the kernel command line until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Out of bounds Read

Weakness Enumeration

CWE-787

CWE-125

Related Identifiers

ALT-PU-2017-1661

ALT-PU-2017-1854

BDU:2017-02413

CVE-2017-1000363

DLA-1099-1

DSA-3945-1

MGASA-2017-0186

MGASA-2017-0187

MGASA-2017-0188

SUSE-SU-2017:2342-1

SUSE-SU-2017:2389-1

SUSE-SU-2017:2525-1

SUSE-SU-2017:2908-1

SUSE-SU-2017:2920-1

USN-3342-1

USN-3342-2

USN-3343-1

USN-3343-2

USN-3344-1

USN-3344-2

USN-3345-1

Affected Products

Alt Linux

Linux

Suse

Ubuntu

References · 427

• https://ubuntu.com/security/CVE-2017-0605 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-1000363 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0187.html · Security Note
• https://ubuntu.com/security/CVE-2017-5577 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-1000363 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0186 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3345-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-1000363 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7294 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3343-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9077 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0186.html · Security Note
• https://bdu.fstec.ru/vul/2017-02413 · Security Note
• https://ubuntu.com/security/CVE-2017-1000363 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7374 · Vendor Advisory