Apache Tomcat Native up to 1.1.34/1.2.16 OSCP Revoked Certificate certificate validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apache Tomcat Native up to 1.1.34/1.2.16. This vulnerability affects unknown code of the component OSCP Handler. This manipulation as part of Revoked Certificate causes certificate validation. This vulnerability is registered as CVE-2018-8020. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Apache Tomcat Native up to 1.1.34/1.2.16 (Application Server Software). Affected by this vulnerability is an unknown code of the component OSCP Handler. The manipulation as part of a Revoked Certificate leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 has a flaw that does not properly check OCSP pre-produced responses, which are lists (multiple entries) of certificate statuses. Subsequently, revoked client certificates may not be properly identified, allowing for users to authenticate with revoked certificates to connections that require mutual TLS. Users not using OCSP checks are not affected by this vulnerability.

The bug was discovered 07/21/2018. The weakness was published 07/31/2018 (Website). It is possible to read the advisory at mail-archives.us.apache.org. This vulnerability is known as CVE-2018-8020 since 03/08/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 112065 (Debian DLA-1475-1 : tomcat-native security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (112065) and SecurityFocus (BID 104934†). Similar entry is available at VDB-122454. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Application Server Software

Vendor

• Apache

Name

• Tomcat Native

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.1.7
• 1.1.8
• 1.1.9
• 1.1.10
• 1.1.11
• 1.1.12
• 1.1.13
• 1.1.14
• 1.1.15
• 1.1.16
• 1.1.17
• 1.1.18
• 1.1.19
• 1.1.20
• 1.1.21
• 1.1.22
• 1.1.23
• 1.1.24
• 1.1.25
• 1.1.26
• 1.1.27
• 1.1.28
• 1.1.29
• 1.1.30
• 1.1.31
• 1.1.32
• 1.1.33
• 1.1.34
• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13
• 1.2.14
• 1.2.15
• 1.2.16

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 112065
Nessus Name: Debian DLA-1475-1 : tomcat-native security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

03/08/2018 🔍
07/21/2018 +134 days 🔍
07/21/2018 +0 days 🔍
07/31/2018 +9 days 🔍
07/31/2018 +0 days 🔍
08/01/2018 +1 days 🔍
08/22/2018 +21 days 🔍
08/23/2018 +1 days 🔍
04/28/2023 +1708 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: RHSA-2018:2469
Status: Not defined

CVE: CVE-2018-8020 (🔍)
GCVE (CVE): GCVE-0-2018-8020
GCVE (VulDB): GCVE-100-122455
SecurityFocus: 104934 - Apache Tomcat Native Connector CVE-2018-8020 Remote Security Vulnerability
SecurityTracker: 1041507

See also: 🔍

Entryinfo

Created: 08/01/2018 11:09
Updated: 04/28/2023 00:38
Changes: 08/01/2018 11:09 (74), 03/12/2020 09:52 (5), 04/28/2023 00:38 (5)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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