libcURL up to 7.57.0 HTTP Header HTTP Requests information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.02

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 vulnerability database at Tenable (106424). Similar entries are available at 114580, 114581, 114582 and 118171.

Productinfo

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Name

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
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

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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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 (🔍)
OVAL: 🔍

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

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: 🔍

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