wpa_supplicant up to 2.5 Network Configuration eap_peer/eap_pwd.c eap_pwd_perform_confirm_exchange null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in wpa_supplicant up to 2.5. This impacts the function eap_pwd_perform_confirm_exchange of the file eap_peer/eap_pwd.c of the component Network Configuration. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2015-5316. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in wpa_supplicant up to 2.5. It has been declared as problematic. This vulnerability affects the function eap_pwd_perform_confirm_exchange of the file eap_peer/eap_pwd.c of the component Network Configuration. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

The eap_pwd_perform_confirm_exchange function in eap_peer/eap_pwd.c in wpa_supplicant 2.x before 2.6, when EAP-pwd is enabled in a network configuration profile, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an EAP-pwd Confirm message followed by the Identity exchange.

The bug was discovered 07/01/2015. The weakness was published 02/21/2018 (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2015-5316 since 07/01/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 293 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 90568 (FreeBSD : hostapd and wpa_supplicant -- multiple vulnerabilities (976567f6-05c5-11e6-94fa-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175554 (Debian Security Update for wpa (DSA 3397-1)).

Upgrading to version 2.6 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 (90568) and SecurityFocus (BID 77538†). Similar entries are available at VDB-75892 and VDB-113649. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.9
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90568
Nessus Name: FreeBSD : hostapd and wpa_supplicant -- multiple vulnerabilities (976567f6-05c5-11e6-94fa-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for wpa USN-2808-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: wpa_supplicant 2.6

Timelineinfo

07/01/2015 🔍
07/01/2015 +0 days 🔍
11/10/2015 +132 days 🔍
04/19/2016 +161 days 🔍
04/19/2016 +0 days 🔍
02/21/2018 +673 days 🔍
02/21/2018 +0 days 🔍
02/22/2018 +1 days 🔍
02/08/2023 +1812 days 🔍

Sourcesinfo

Advisory: USN-2808-1
Researcher: Jouni Malinen
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-5316 (🔍)
GCVE (CVE): GCVE-0-2015-5316
GCVE (VulDB): GCVE-100-113650

OVAL: 🔍

SecurityFocus: 77538 - wpa_supplicant CVE-2015-5316 Null Pointer Deference Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/22/2018 07:26
Updated: 02/08/2023 16:20
Changes: 02/22/2018 07:26 (77), 01/07/2020 14:35 (4), 02/04/2021 11:56 (2), 02/08/2023 16:20 (3)
Complete: 🔍
Cache ID: 216::103

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