libcURL up to 7.57.0 HTTP Header HTTP Requests information disclosure

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.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in libcURL up to 7.57.0. This affects an unknown part of the component HTTP Header Handler. Such manipulation as part of HTTP Requests leads to information disclosure. This vulnerability is referenced as CVE-2018-1000007. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in libcURL up to 7.57.0 (Network Utility Software). It has been rated as problematic. Affected by this issue is an unknown functionality of the component HTTP Header Handler. The manipulation as part of a HTTP Requests leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

libcurl 7.1 through 7.57.0 might accidentally leak authentication data to third parties. When asked to send custom headers in its HTTP requests, libcurl will send that set of headers first to the host in the initial URL but also, if asked to follow redirects and a 30X HTTP response code is returned, to the host mentioned in URL in the `Location:` response header value. Sending the same set of headers to subsequest hosts is in particular a problem for applications that pass on custom `Authorization:` headers, as this header often contains privacy sensitive information or data that could allow others to impersonate the libcurl-using client's request.

The bug was discovered 01/24/2018. The weakness was published 01/24/2018 (Website). The advisory is shared for download at curl.haxx.se. This vulnerability is handled as CVE-2018-1000007 since 01/22/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 106424 (FreeBSD : cURL -- Multiple vulnerabilities (0cbf0fa6-dcb7-469c-b87a-f94cffd94583)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 237019 (Red Hat Update for curl and nss-pem (RHSA-2018:3157)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106424), SecurityFocus (BID 103415†) and SecurityTracker (ID 1040274†). Similar entries are available at VDB-114580, VDB-114581, VDB-114582 and VDB-118171. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Network Utility Software

Name

• libcURL

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19
• 7.20
• 7.21
• 7.22
• 7.23
• 7.24
• 7.25
• 7.26
• 7.27
• 7.28
• 7.29
• 7.30
• 7.31
• 7.32
• 7.33
• 7.34
• 7.35
• 7.36
• 7.37
• 7.38
• 7.39
• 7.40
• 7.41
• 7.42
• 7.43
• 7.44
• 7.45
• 7.46
• 7.47
• 7.48
• 7.49
• 7.50
• 7.51
• 7.52
• 7.53
• 7.54
• 7.55
• 7.56
• 7.57.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 106424
Nessus Name: FreeBSD : cURL -- Multiple vulnerabilities (0cbf0fa6-dcb7-469c-b87a-f94cffd94583)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840059
OpenVAS Name: Debian Security Advisory DSA 4098-1 (curl - 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: 🔍

Timelineinfo

01/22/2018 🔍
01/24/2018 +2 days 🔍
01/24/2018 +0 days 🔍
01/24/2018 +0 days 🔍
01/25/2018 +1 days 🔍
01/25/2018 +0 days 🔍
01/26/2018 +1 days 🔍
01/29/2018 +3 days 🔍
03/14/2018 +44 days 🔍
02/02/2023 +1786 days 🔍

Sourcesinfo

Advisory: RHSA-2018:3157
Researcher: Dario Weisser.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1000007 (🔍)
GCVE (CVE): GCVE-0-2018-1000007
GCVE (VulDB): GCVE-100-112400

OVAL: 🔍

SecurityFocus: 103415 - cURL/libcURL CVE-2018-1000121 Denial of Service Vulnerability
SecurityTracker: 1040274

See also: 🔍

Entryinfo

Created: 01/25/2018 08:16
Updated: 02/02/2023 14:49
Changes: 01/25/2018 08:16 (76), 01/01/2020 13:19 (9), 02/01/2021 15:56 (2), 02/02/2023 14:49 (3)
Complete: 🔍
Cache ID: 216::103

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