hostapd/wpa_supplicant EAP-pwd Peer L/M denial of service

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

Summaryinfo

A vulnerability described as problematic has been identified in hostapd and wpa_supplicant. This vulnerability affects unknown code of the component EAP-pwd Peer. Executing a manipulation of the argument L/M can lead to denial of service. This vulnerability is tracked as CVE-2015-4146. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in hostapd and wpa_supplicant (unknown version) and classified as problematic. This vulnerability affects an unknown code block of the component EAP-pwd Peer. The manipulation of the argument L/M with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.

The weakness was disclosed 06/15/2015 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2015-4146 since 05/31/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 83964 (FreeBSD : hostapd and wpa_supplicant -- multiple vulnerabilities (bbc0db92-084c-11e5-bb90-002590263bf5)), 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 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 (83964), SecurityFocus (BID 74549†) and Vulnerability Center (SBV-57444†). The entries VDB-75887, VDB-75888, VDB-75889 and VDB-75890 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 83964
Nessus Name: FreeBSD : hostapd and wpa_supplicant -- multiple vulnerabilities (bbc0db92-084c-11e5-bb90-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703397
OpenVAS Name: Debian Security Advisory DSA 3397-1 (wpa - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/31/2015 🔍
06/01/2015 +1 days 🔍
06/03/2015 +2 days 🔍
06/03/2015 +0 days 🔍
06/15/2015 +12 days 🔍
06/15/2015 +0 days 🔍
06/16/2015 +1 days 🔍
03/21/2016 +279 days 🔍
05/21/2022 +2252 days 🔍

Sourcesinfo

Advisory: USN-2650-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-4146 (🔍)
GCVE (CVE): GCVE-0-2015-4146
GCVE (VulDB): GCVE-100-75892

OVAL: 🔍

SecurityFocus: 74549
Vulnerability Center: 57444 - Hostapd and Wpa_Supplicant 1.0 through 2.4 Remote DoS via a Crafted Message, Medium

See also: 🔍

Entryinfo

Created: 06/16/2015 10:15
Updated: 05/21/2022 08:27
Changes: 06/16/2015 10:15 (65), 02/01/2019 14:49 (5), 05/21/2022 08:27 (3)
Complete: 🔍
Cache ID: 216:A76:103

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