mod_http2 2.4.24/2.4.25 HTTP/2 Request null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in mod_http2 2.4.24/2.4.25. Affected by this vulnerability is an unknown functionality of the component HTTP2 Request Handler. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2017-7659. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in mod_http2 2.4.24/2.4.25. It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component HTTP2 Request Handler. 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. The summary by CVE is:

A maliciously constructed HTTP/2 request could cause mod_http2 2.4.24, 2.4.25 to dereference a NULL pointer and crash the server process.

The bug was discovered 06/19/2017. The weakness was presented 07/26/2017 by Robert Swiecki (Website). The advisory is shared at lists.apache.org. This vulnerability is known as CVE-2017-7659 since 04/11/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 100995 (Apache 2.2.x < 2.2.33-dev / 2.4.x < 2.4.26 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176075 (Debian Security Update for apache2 (DSA 3896-1)).

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 (100995) and SecurityFocus (BID 99132†). See VDB-102689, VDB-102690, VDB-102697 and VDB-102698 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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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: 100995
Nessus Name: Apache 2.2.x < 2.2.33-dev / 2.4.x < 2.4.26 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703896
OpenVAS Name: Debian Security Advisory DSA 3896-1 (apache2 - 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

04/11/2017 🔍
06/19/2017 +69 days 🔍
06/19/2017 +0 days 🔍
06/19/2017 +0 days 🔍
06/22/2017 +3 days 🔍
07/26/2017 +34 days 🔍
07/26/2017 +0 days 🔍
07/27/2017 +1 days 🔍
12/14/2022 +1966 days 🔍

Sourcesinfo

Advisory: RHSA-2017:2483
Researcher: Robert Swiecki
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7659 (🔍)
GCVE (CVE): GCVE-0-2017-7659
GCVE (VulDB): GCVE-100-104533

OVAL: 🔍

SecurityFocus: 99132 - Apache HTTP Server CVE-2017-7659 Denial of Service Vulnerability
SecurityTracker: 1038711

See also: 🔍

Entryinfo

Created: 07/27/2017 08:23
Updated: 12/14/2022 09:12
Changes: 07/27/2017 08:23 (70), 11/01/2019 15:12 (8), 01/06/2021 13:56 (3), 12/14/2022 09:12 (3)
Complete: 🔍
Cache ID: 216::103

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