VDB-143422 · CVE-2019-17502 · GCVE-0-2019-17502

Hydra up to 0.1.8 HTTP Header read.c process_header_end Content-Length null pointer dereference

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Hydra up to 0.1.8. It has been declared as problematic. This issue affects the function process_header_end of the file read.c of the component HTTP Header Handler. Executing a manipulation of the argument Content-Length as part of POST Request can lead to null pointer dereference. This vulnerability is tracked as CVE-2019-17502. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Hydra up to 0.1.8. It has been declared as problematic. This vulnerability affects the function process_header_end of the file read.c of the component HTTP Header Handler. The manipulation of the argument Content-Length as part of a POST Request leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.

The weakness was disclosed 10/12/2019. This vulnerability was named CVE-2019-17502 since 10/11/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

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

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Productinfo

Name

Hydra

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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: Null pointer dereference
CWE: CWE-476 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/11/2019 🔍
10/12/2019 +1 days 🔍
10/13/2019 +1 days 🔍
10/13/2019 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2019-17502 (🔍)
GCVE (CVE): GCVE-0-2019-17502
GCVE (VulDB): GCVE-100-143422

Entryinfo

Created: 10/13/2019 17:03
Updated: 10/13/2019 17:08
Changes: 10/13/2019 17:03 (38), 10/13/2019 17:08 (17)
Complete: 🔍
Cache ID: 216::103