CVE-2017-7308 Information

Description

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate certain block-size data which allows local users to cause a denial of service (integer signedness error and out-of-bounds write) or gain privileges (if the CAP_NET_RAW capability is held) via crafted system calls.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/97234 https://access.redhat.com/errata/RHSA-2017:1297 https://access.redhat.com/errata/RHSA-2017:1298 https://access.redhat.com/errata/RHSA-2017:1308 https://access.redhat.com/errata/RHSA-2018:1854 https://googleprojectzero.blogspot.com/2017/05/exploiting-linux-kernel-via-packet.html https://patchwork.ozlabs.org/patch/744811/ https://patchwork.ozlabs.org/patch/744812/ https://patchwork.ozlabs.org/patch/744813/ https://source.android.com/security/bulletin/2017-07-01 https://www.exploit-db.com/exploits/41994/ https://www.exploit-db.com/exploits/44654/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8