CVE-2017-5970

kernel: ipv4: Invalid IP options could cause skb->dst drop

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The ipv4_pktinfo_prepare function in net/ipv4/ip_sockglue.c in the Linux kernel through 4.9.9 allows attackers to cause a denial of service (system crash) via (1) an application that makes crafted system calls or possibly (2) IPv4 traffic with invalid IP options.

La función ipv4_pktinfo_prepare en net/ipv4/ip_sockglue.c en el kernel de Linux hasta la versión 4.9.9 permite a atacantes provocar una denegación de servicio (caída de sistema) a través de (1) una aplicación que hace llamadas de sistema manipuladas o posiblemente (2) tráfico IPv4 con opciones IP inválidas.

A vulnerability was found in the Linux kernel where having malicious IP options present would cause the ipv4_pktinfo_prepare() function to drop/free the dst. This could result in a system crash or possible privilege escalation.

USN-3358-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. Please note that this update changes the Linux HWE kernel to the 4.10 based kernel from Ubuntu 17.04, superseding the 4.8 based HWE kernel from Ubuntu 16.10. Ben Harris discovered that the Linux kernel would strip extended privilege attributes of files when performing a failed unprivileged system call. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-02-12 CVE Reserved
2017-02-14 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (12)

URL	Tag	Source
http://www.securityfocus.com/bid/96233	Vdb Entry
https://source.android.com/security/bulletin/2017-07-01	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b2cef20f19c87999fff3da4071e66937db9644	2019-10-03
http://www.openwall.com/lists/oss-security/2017/02/12/3	2019-10-03
https://bugzilla.redhat.com/show_bug.cgi?id=1421638	2017-09-06
https://github.com/torvalds/linux/commit/34b2cef20f19c87999fff3da4071e66937db9644	2019-10-03
https://patchwork.ozlabs.org/patch/724136	2019-10-03

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3791	2019-10-03
https://access.redhat.com/errata/RHSA-2017:1842	2019-10-03
https://access.redhat.com/errata/RHSA-2017:2077	2019-10-03
https://access.redhat.com/errata/RHSA-2017:2669	2019-10-03
https://access.redhat.com/security/cve/CVE-2017-5970	2017-09-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.9.9 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.9.9"		-		Affected