OWASP ModSecurity Core Rule Set up to 3.1.0 REQUEST-933-APPLICATION-ATTACK-PHP.conf incorrect regex ⚔ [Disputed]

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in OWASP ModSecurity Core Rule Set up to 3.1.0. It has been rated as problematic. The affected element is an unknown function of the file /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf. The manipulation leads to incorrect regex. This vulnerability is documented as CVE-2019-11390. The attack can be initiated remotely. There is not any exploit available. It is still unclear if this vulnerability genuinely exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OWASP ModSecurity Core Rule Set up to 3.1.0. This issue affects an unknown function of the file /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf. The manipulation with an unknown input leads to a incorrect regex vulnerability. Using CWE to declare the problem leads to CWE-185. The product specifies a regular expression in a way that causes data to be improperly matched or compared. Impacted is availability. The summary by CVE is:

An issue was discovered in OWASP ModSecurity Core Rule Set (CRS) through 3.1.0. /rules/REQUEST-933-APPLICATION-ATTACK-PHP.conf allows remote attackers to cause a denial of service (ReDOS) by entering a specially crafted string with set_error_handler# at the beginning and nested repetition operators.

The bug was discovered 04/15/2019. The weakness was released 04/21/2019. The identification of this vulnerability is CVE-2019-11390 since 04/20/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-133932, VDB-133930, VDB-133929 and VDB-133928. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Incorrect regex
CWE: CWE-185 / CWE-697
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/15/2019 🔍
04/20/2019 +5 days 🔍
04/21/2019 +1 days 🔍
04/23/2019 +2 days 🔍
08/05/2024 +1931 days 🔍

Sourcesinfo

Advisory: 1358
Status: Not defined
Disputed: 🔍

CVE: CVE-2019-11390 (🔍)
GCVE (CVE): GCVE-0-2019-11390
GCVE (VulDB): GCVE-100-133931
scip Labs: https://www.scip.ch/en/?labs.20130913
See also: 🔍

Entryinfo

Created: 04/23/2019 08:46
Updated: 08/05/2024 02:02
Changes: 04/23/2019 08:46 (54), 06/01/2020 09:48 (1), 09/06/2023 10:55 (4), 08/05/2024 02:02 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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