Apache Struts up to 2.3.33/2.5.12 URLValidator Regex resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.1 | $0-$5k | 0.00 |
A vulnerability classified as problematic was found in Apache Struts up to 2.3.33/2.5.12 (Programming Tool Software). Affected by this vulnerability is an unknown part of the component URLValidator. The manipulation as part of a Regex leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.
The bug was discovered 09/05/2017. The weakness was published 09/05/2017 by Adam Cazzolla and Jonathan Bullock as S2-050 (Website). The advisory is shared at struts.apache.org. This vulnerability is known as CVE-2017-9804 since 06/21/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 102960 (Apache Struts 2.1.x >= 2.1.2 / 2.2.x / 2.3.x < 2.3.34 / 2.5.x < 2.5.13 Multiple Vulnerabilities (S2-050 - S2-053)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 87306 (Oracle WebLogic Server Samples Apache Struts Vulnerability (Doc ID 2309128.1)).
Upgrading to version 2.3.34 or 2.5.13 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:
"^(?:https?|ftp):\\/\\/" + "(?:(?:[a-z0-9$_.+!*'(),;?&=\\-]|%[0-9a-f]{2})+" + "(?::(?:[a-z0-9$_.+!*'(),;?&=\\-]|%[0-9a-f]{2})+)?" + "@)?#?" + "(?:(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)*" + "[a-z][a-z0-9-]*[a-z0-9]" + "|(?:(?:[1-9]?\\d|1\\d{2}|2[0-4]\\d|25[0-5])\\.){3}" + "(?:[1-9]?\\d|1\\d{2}|2[0-4]\\d|25[0-5])" + ")(?::\\d+)?" + ")(?:(?:\\/(?:[a-z0-9$_.+!*'(),;:@&=\\-]|%[0-9a-f]{2})*)*" + "(?:\\?(?:[a-z0-9$_.+!*'(),;:@&=\\-\\/:]|%[0-9a-f]{2})*)?)?" + "(?:#(?:[a-z0-9$_.+!*'(),;:@&=\\-]|%[0-9a-f]{2})*)?" + "$"
The vulnerability is also documented in the vulnerability database at Tenable (102960). Similar entries are available at 103401, 103518, 103519 and 106166.
Product
Type
Vendor
Name
Version
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 2.3.8
- 2.3.9
- 2.3.10
- 2.3.11
- 2.3.12
- 2.3.13
- 2.3.14
- 2.3.15
- 2.3.16
- 2.3.17
- 2.3.18
- 2.3.19
- 2.3.20
- 2.3.21
- 2.3.22
- 2.3.23
- 2.3.24
- 2.3.25
- 2.3.26
- 2.3.27
- 2.3.28
- 2.3.29
- 2.3.30
- 2.3.31
- 2.3.32
- 2.3.33
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.3
- 2.5.4
- 2.5.5
- 2.5.6
- 2.5.7
- 2.5.8
- 2.5.9
- 2.5.10
- 2.5.11
- 2.5.12
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB 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: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Nessus ID: 102960
Nessus Name: Apache Struts 2.1.x >= 2.1.2 / 2.2.x / 2.3.x < 2.3.34 / 2.5.x < 2.5.13 Multiple Vulnerabilities (S2-050 - S2-053)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 802423
OpenVAS Name: Apache Struts Multiple Denial of Service Vulnerabilities (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Struts 2.3.34/2.5.13
Workaround: Regex
Timeline
06/21/2017 🔍09/05/2017 🔍
09/05/2017 🔍
09/05/2017 🔍
09/05/2017 🔍
09/05/2017 🔍
09/05/2017 🔍
09/07/2017 🔍
09/20/2017 🔍
01/11/2021 🔍
Sources
Vendor: apache.orgAdvisory: S2-050
Researcher: Adam Cazzolla, Jonathan Bullock
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-9804 (🔍)
SecurityTracker: 1039261
SecurityFocus: 100612 - Apache Struts CVE-2017-9804 Incomplete Fix Denial of Service Vulnerability
See also: 🔍
Entry
Created: 09/07/2017 09:10Updated: 01/11/2021 07:36
Changes: 09/07/2017 09:10 (76), 11/13/2019 10:31 (12), 01/11/2021 07:36 (2)
Complete: 🔍
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