Apache HTTP Server up to 2.4.33 HTTP/2 Request resource management

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

Summaryinfo

A vulnerability classified as problematic has been found in Apache HTTP Server up to 2.4.33. The impacted element is an unknown function of the component HTTP2 Request Handler. This manipulation causes resource management. The identification of this vulnerability is CVE-2018-1333. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache HTTP Server up to 2.4.33 (Web Server). It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component HTTP2 Request Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33).

The bug was discovered 07/18/2018. The weakness was shared 06/18/2018 (Website). The advisory is shared at httpd.apache.org. This vulnerability is known as CVE-2018-1333 since 12/06/2017. 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 111185 (Slackware 14.0 / 14.1 / 14.2 / current : httpd (SSA:2018-199-01)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171528 (OpenSUSE Security Update for apache2 (openSUSE-SU-2018:2433-1)).

Upgrading to version 2.4.34 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111185) and SecurityFocus (BID 105414†). The entries VDB-110393, VDB-116799, VDB-116839 and VDB-121621 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / 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: 111185
Nessus Name: Slackware 14.0 / 14.1 / 14.2 / current : httpd (SSA:2018-199-01)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: HTTP Server 2.4.34

Timelineinfo

12/06/2017 🔍
06/18/2018 +193 days 🔍
06/18/2018 +0 days 🔍
07/18/2018 +30 days 🔍
07/18/2018 +0 days 🔍
07/20/2018 +2 days 🔍
08/04/2018 +15 days 🔍
09/25/2018 +52 days 🔍
04/29/2023 +1677 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: RHSA-2018:3558
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1333 (🔍)
GCVE (CVE): GCVE-0-2018-1333
GCVE (VulDB): GCVE-100-122569
SecurityFocus: 105414 - Apache HTTP Server CVE-2018-11763 Denial of Service Vulnerability
SecurityTracker: 1041402

See also: 🔍

Entryinfo

Created: 08/04/2018 08:53
Updated: 04/29/2023 14:12
Changes: 08/04/2018 08:53 (76), 03/13/2020 08:21 (4), 04/29/2023 14:12 (5)
Complete: 🔍
Cache ID: 216::103

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

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