Linux Kernel up to 4.12.3 net/xfrm/xfrm_policy.c out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 4.12.3. This issue affects some unknown processing of the file net/xfrm/xfrm_policy.c. This manipulation causes out-of-bounds. The identification of this vulnerability is CVE-2017-11600. The attack can only be executed locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.12.3 (Operating System) and classified as critical. Affected by this vulnerability is some unknown functionality of the file net/xfrm/xfrm_policy.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

net/xfrm/xfrm_policy.c in the Linux kernel through 4.12.3, when CONFIG_XFRM_MIGRATE is enabled, does not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allows local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message.

The bug was discovered 07/11/2017. The weakness was shared 07/24/2017 (Website). The advisory is shared at seclists.org. This vulnerability is known as CVE-2017-11600 since 07/24/2017. An attack has to be approached locally. A single authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102205 (Virtuozzo 7 : readykernel-patch (VZA-2017-067)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351447 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-013).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102205) and SecurityFocus (BID 99928†). The entries VDB-102802, VDB-103034, VDB-104864 and VDB-105193 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102205
Nessus Name: Virtuozzo 7 : readykernel-patch (VZA-2017-067)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3981-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

07/11/2017 🔍
07/11/2017 +0 days 🔍
07/24/2017 +13 days 🔍
07/24/2017 +0 days 🔍
07/24/2017 +0 days 🔍
07/24/2017 +0 days 🔍
08/04/2017 +11 days 🔍
08/07/2017 +3 days 🔍
12/13/2022 +1954 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:1965
Researcher: bo Zhang
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11600 (🔍)
GCVE (CVE): GCVE-0-2017-11600
GCVE (VulDB): GCVE-100-104449

OVAL: 🔍

SecurityFocus: 99928 - Linux Kernel 'net/xfrm/xfrm_policy.c' Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/24/2017 22:20
Updated: 12/13/2022 18:14
Changes: 07/24/2017 22:20 (78), 10/31/2019 21:00 (6), 01/06/2021 12:05 (3), 12/13/2022 18:14 (3)
Complete: 🔍
Cache ID: 216:4CA:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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