PT-2017-2617 · Linux+3 · Linux Kernel+3

李强 · Published 2017-05-02 · Updated 2023-02-14 · CVE-2017-7487

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 kernel versions through 4.11.1

Description The issue is related to the ipxitf ioctl function in the Linux kernel, which mishandles reference counts. This can be exploited by local users to cause a denial of service (use-after-free) or possibly have other unspecified impacts via a failed SIOCGIFADDR ioctl call for an IPX interface.

Recommendations For Linux kernel versions through 4.11.1, update to a version later than 4.11.1 to resolve the issue. As a temporary workaround, consider restricting access to the ipxitf ioctl function to minimize the risk of exploitation.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2017-1661

ALT-PU-2017-1854

BDU:2017-01836

CVE-2017-7487

DLA-993-1

DSA-3886-1

MGASA-2017-0186

MGASA-2017-0187

MGASA-2017-0188

OPENSUSE-SU-2017_1513-1

SUSE-SU-2017:1853-1

SUSE-SU-2017:1990-1

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-3344-1

USN-3344-2

USN-3404-1

USN-3404-2

USN-3406-1

USN-3406-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 681

• https://github.com/torvalds/linux/commit/ee0d8d8482345ff97a75a7d747efc309f13b0d80 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7914 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80 · Patch
• https://ubuntu.com/security/CVE-2017-9075 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9077 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-7487 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9076 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3404-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3404-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0186.html · Security Note
• https://ubuntu.com/security/CVE-2017-1000363 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1447734 · Patch
• https://patchwork.ozlabs.org/patch/757549 · Patch
• https://ubuntu.com/security/CVE-2017-9074 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3886-1 · Vendor Advisory