Linux Kernel drivers/char/lp.c out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue is some unknown functionality of the file drivers/char/lp.c. The manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2017-1000363. The attack must be carried out locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the file drivers/char/lp.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.

The bug was discovered 05/22/2017. The weakness was presented 07/17/2017 by Roee Hay (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2017-1000363 since 07/10/2017. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 28 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 100922 (Ubuntu 17.04 : linux, linux-meta vulnerabilities (USN-3324-1) (Stack Clash)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196829 (Ubuntu Security Notification for Linux, Linux-meta Vulnerabilities (USN-3335-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100922) and SecurityFocus (BID 98651†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Android

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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: 100922
Nessus Name: Ubuntu 17.04 : linux, linux-meta vulnerabilities (USN-3324-1) (Stack Clash)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux USN-3345-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2017 🔍
05/23/2017 +1 days 🔍
06/19/2017 +27 days 🔍
06/20/2017 +1 days 🔍
07/10/2017 +20 days 🔍
07/17/2017 +7 days 🔍
07/17/2017 +0 days 🔍
07/18/2017 +1 days 🔍
12/12/2022 +1973 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3324-1⛔
Researcher: Roee Hay
Status: Not defined

CVE: CVE-2017-1000363 (🔍)
GCVE (CVE): GCVE-0-2017-1000363
GCVE (VulDB): GCVE-100-103643

OVAL: 🔍

SecurityFocus: 98651 - Linux Kernel CVE-2017-1000363 Integer Overflow Vulnerability

Entryinfo

Created: 07/18/2017 08:57
Updated: 12/12/2022 15:03
Changes: 07/18/2017 08:57 (76), 12/30/2019 08:37 (3), 12/12/2022 15:03 (4)
Complete: 🔍
Cache ID: 216:295:103

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