Linux Kernel up to 4.3.3 drivers/net/ppp/pptp.c pptp_bind/pptp_connect Kernel Memory information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 4.3.3 and classified as problematic. This vulnerability affects the function pptp_bind/pptp_connect of the file drivers/net/ppp/pptp.c. Performing a manipulation results in information disclosure (Kernel Memory). This vulnerability is cataloged as CVE-2015-8569. The attack must be initiated from a local position. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 4.3.3 (Operating System). This affects the function pptp_bind/pptp_connect of the file drivers/net/ppp/pptp.c. The manipulation with an unknown input leads to a information disclosure vulnerability (Kernel Memory). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The (1) pptp_bind and (2) pptp_connect functions in drivers/net/ppp/pptp.c in the Linux kernel through 4.3.3 do not verify an address length, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted application.

The weakness was shared 12/28/2015 by Marcus Meissner (Website). The advisory is shared at lkml.org. This vulnerability is uniquely identified as CVE-2015-8569. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 87741 (Debian DSA-3434-1 : linux - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168771 (SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2016:1203-1)).

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 (87741), SecurityFocus (BID 79428†) and Vulnerability Center (SBV-55536†). The entries VDB-8569, VDB-78541, VDB-79223 and VDB-79228 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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Kernel Memory
Class: Information disclosure / Kernel Memory
CWE: CWE-200 / CWE-284 / CWE-266
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: 87741
Nessus Name: Debian DSA-3434-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2016-6
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: 🔍

Patch: git.kernel.org

Timelineinfo

12/14/2015 🔍
12/14/2015 +0 days 🔍
12/15/2015 +0 days 🔍
12/28/2015 +13 days 🔍
12/28/2015 +0 days 🔍
12/29/2015 +1 days 🔍
01/05/2016 +7 days 🔍
01/06/2016 +1 days 🔍
01/07/2016 +1 days 🔍
07/01/2022 +2367 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2886-1
Researcher: Marcus Meissner
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8569 (🔍)
GCVE (CVE): GCVE-0-2015-8569
GCVE (VulDB): GCVE-100-79929

OVAL: 🔍

SecurityFocus: 79428 - Linux Kernel Multiple Local Information Disclosure Vulnerabilities
SecurityTracker: 1034549
Vulnerability Center: 55536 - Linux Kernel <=4.3.3 Local Information Disclosure in pptp - CVE-2015-8569, Low

See also: 🔍

Entryinfo

Created: 12/29/2015 13:22
Updated: 07/01/2022 16:26
Changes: 12/29/2015 13:22 (64), 06/20/2018 08:42 (25), 07/01/2022 16:26 (6)
Complete: 🔍
Cache ID: 216::103

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

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