haxx.se cURL up to 7.48.0 mbedTLS/PolarSSL lib/vtls/mbedtls.c sslsethostname input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in haxx.se cURL up to 7.48.0 and classified as critical. The impacted element is the function sslsethostname in the library lib/vtls/mbedtls.c of the component mbedTLS/PolarSSL. The manipulation leads to input validation. This vulnerability is referenced as CVE-2016-3739. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in haxx.se cURL up to 7.48.0 (Network Utility Software). This issue affects the function sslsethostname in the library lib/vtls/mbedtls.c of the component mbedTLS/PolarSSL. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability.

The weakness was published 05/18/2016 as confirmed advisory (Website). The advisory is shared at curl.haxx.se. The identification of this vulnerability is CVE-2016-3739 since 03/30/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 91285 (Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : curl (SSA:2016-141-01)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43619 (Juniper Junos OS Multiple vulnerabilities in cURL versions (JSA10874)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at curl.haxx.se. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91285), SecurityFocus (BID 90726†) and SecurityTracker (ID 1035907†). Similar entries are available at VDB-8439, VDB-9262, VDB-10906 and VDB-11245. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

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: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Input validation
CWE: CWE-20
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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Nessus ID: 91285
Nessus Name: Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : curl (SSA:2016-141-01)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 830682
OpenVAS Name: HP System Management Homepage Multiple Vulnerabilities (Oct-2016)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: curl.haxx.se

Timelineinfo

03/30/2016 🔍
05/18/2016 +49 days 🔍
05/18/2016 +0 days 🔍
05/18/2016 +0 days 🔍
05/18/2016 +0 days 🔍
05/19/2016 +1 days 🔍
05/20/2016 +1 days 🔍
05/23/2016 +3 days 🔍
08/21/2022 +2281 days 🔍

Sourcesinfo

Advisory: curl.haxx.se
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-3739 (🔍)
GCVE (CVE): GCVE-0-2016-3739
GCVE (VulDB): GCVE-100-87545
SecurityFocus: 90726 - cURL/libcURL CVE-2016-3739 TLS Certificate Validation Security Bypass Vulnerability
SecurityTracker: 1035907

See also: 🔍

Entryinfo

Created: 05/19/2016 11:18
Updated: 08/21/2022 11:50
Changes: 05/19/2016 11:18 (72), 12/02/2018 09:55 (13), 08/21/2022 11:50 (4)
Complete: 🔍
Cache ID: 216:B84:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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