cURL up to 7.32.0 lib/ssluse.c ossl_connect_step3 cryptographic issue

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 cURL and classified as problematic. This vulnerability affects the function ossl_connect_step3 of the file lib/ssluse.c. This manipulation causes cryptographic issue. This vulnerability is registered as CVE-2013-4545. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in cURL (Network Utility Software) and classified as problematic. Affected by this vulnerability is the function ossl_connect_step3 of the file lib/ssluse.c. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verification (CURLOPT_SSL_VERIFYHOST) when the digital signature verification (CURLOPT_SSL_VERIFYPEER) is disabled, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

The weakness was published 10/02/2013 by Ishan Singh-Levett and Scott Cantor as Possible SSL bug in libcurl 7.32 as confirmed mailinglist post (Maillist). The advisory is shared at curl.haxx.se. This vulnerability is known as CVE-2013-4545 since 06/12/2013. The attack can be launched remotely. A single authentication is necessary for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 71151 (Fedora 19 : mingw-curl-7.33.0-1.fc19 (2013-21887)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora 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)).

Upgrading to version 7.33.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (71151), SecurityFocus (BID 63776†) and OSVDB (99972†). Similar entries are available at VDB-8439, VDB-9262, VDB-10906 and VDB-11554. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
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: 71151
Nessus Name: Fedora 19 : mingw-curl-7.33.0-1.fc19 (2013-21887)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 892798
OpenVAS Name: Debian Security Advisory DSA 2798-1 (curl - unchecked ssl certificate host name
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: 🔍

Upgrade: cURL 7.33.0
Patch: github.com

Timelineinfo

06/12/2013 🔍
10/02/2013 +112 days 🔍
10/02/2013 +0 days 🔍
11/11/2013 +40 days 🔍
11/23/2013 +12 days 🔍
11/25/2013 +2 days 🔍
12/02/2013 +7 days 🔍
04/29/2019 +1974 days 🔍

Sourcesinfo

Advisory: Possible SSL bug in libcurl 7.32
Researcher: Ishan Singh-Levett, Scott Cantor
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4545 (🔍)
GCVE (CVE): GCVE-0-2013-4545
GCVE (VulDB): GCVE-100-11245

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 63776 - cURL/libcURL SSL Certificate Host Name Validation Security Bypass Vulnerability
OSVDB: 99972

See also: 🔍

Entryinfo

Created: 11/25/2013 10:38
Updated: 04/29/2019 21:05
Changes: 11/25/2013 10:38 (75), 04/29/2019 21:05 (6)
Complete: 🔍
Committer: olku
Cache ID: 216:937:103

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