Hostapd up to 2.5 eap_server_pwd.c eap_pwd_process EAP-pwd Message memory corruption

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

Summaryinfo

A vulnerability labeled as problematic has been found in Hostapd up to 2.5. The impacted element is the function eap_pwd_process of the file eap_server/eap_server_pwd.c. Such manipulation as part of EAP-pwd Message leads to memory corruption. This vulnerability is listed as CVE-2015-5314. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Hostapd up to 2.5 and classified as problematic. Affected by this issue is the function eap_pwd_process of the file eap_server/eap_server_pwd.c. The manipulation as part of a EAP-pwd Message leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.

The bug was discovered 07/01/2015. The weakness was presented 02/21/2018 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2015-5314 since 07/01/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 849 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104237 (openSUSE Security Update : hostapd (openSUSE-2017-1201) (KRACK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170540 (OpenSUSE Security Update for hostapd (openSUSE-SU-2017:2896-1)).

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 vulnerability database at Tenable (104237). See VDB-75143, VDB-75887, VDB-75890 and VDB-75891 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: Memory corruption
CWE: CWE-119
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: 104237
Nessus Name: openSUSE Security Update : hostapd (openSUSE-2017-1201) (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for hostapd openSUSE-SU-2017:2896-1 (hostapd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Hostapd 2.6

Timelineinfo

07/01/2015 🔍
07/01/2015 +0 days 🔍
10/27/2017 +849 days 🔍
10/30/2017 +3 days 🔍
02/21/2018 +114 days 🔍
02/21/2018 +0 days 🔍
02/22/2018 +1 days 🔍
02/08/2023 +1812 days 🔍

Sourcesinfo

Advisory: USN-2808-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-5314 (🔍)
GCVE (CVE): GCVE-0-2015-5314
GCVE (VulDB): GCVE-100-113648

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 02/22/2018 07:26
Updated: 02/08/2023 16:05
Changes: 02/22/2018 07:26 (75), 01/07/2020 14:11 (2), 02/08/2023 16:05 (4)
Complete: 🔍
Cache ID: 216:C99:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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