Apache HTTP Server up to 2.4.29 mod_cache_socache Request Header out-of-bounds

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

Summaryinfo

A vulnerability categorized as problematic has been discovered in Apache HTTP Server up to 2.4.29. Affected by this vulnerability is an unknown functionality of the component mod_cache_socache. Executing a manipulation as part of Request Header can lead to out-of-bounds. This vulnerability is registered as CVE-2018-1303. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apache HTTP Server up to 2.4.29 (Web Server) and classified as problematic. This vulnerability affects an unknown functionality of the component mod_cache_socache. The manipulation as part of a Request Header leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. CVE summarizes:

A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability.

The bug was discovered 03/21/2018. The weakness was published 03/26/2018 by Robert Swiecki (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2018-1303 since 12/07/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 109598 (SUSE SLES12 Security Update : apache2 (SUSE-SU-2018:1161-1)), 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 197112 (Ubuntu Security Notification for Apache2 Vulnerabilities (USN-3627-1)).

Upgrading to version 2.4.30 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 (109598) and SecurityFocus (BID 103522†). Similar entries are available at VDB-103521, VDB-108939, VDB-115057 and VDB-115038. Once again VulDB remains the best source for vulnerability data.

Productinfo

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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: Out-of-bounds
CWE: CWE-125 / 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: 109598
Nessus Name: SUSE SLES12 Security Update : apache2 (SUSE-SU-2018:1161-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 866622
OpenVAS Name: Debian Security Advisory DSA 4164-1 (apache2 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

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 2.4.30

Timelineinfo

12/07/2017 🔍
03/21/2018 +104 days 🔍
03/21/2018 +0 days 🔍
03/26/2018 +5 days 🔍
03/26/2018 +0 days 🔍
03/27/2018 +1 days 🔍
05/07/2018 +41 days 🔍
05/08/2018 +1 days 🔍
02/24/2023 +1753 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: RHSA-2018:3558
Researcher: Robert Swiecki
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1303 (🔍)
GCVE (CVE): GCVE-0-2018-1303
GCVE (VulDB): GCVE-100-115060

OVAL: 🔍

SecurityFocus: 103522 - Apache HTTP Server CVE-2018-1303 Denial of Service Vulnerability
SecurityTracker: 1040572

See also: 🔍

Entryinfo

Created: 03/27/2018 11:07
Updated: 02/24/2023 10:25
Changes: 03/27/2018 11:07 (80), 01/16/2020 20:13 (5), 02/06/2021 08:39 (3), 02/24/2023 10:25 (3)
Complete: 🔍
Cache ID: 216::103

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