cURL/libcURL up to 7.50.3 Kerberos double free

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in cURL and libcURL up to 7.50.3. This affects an unknown function of the component Kerberos. Performing a manipulation results in double free. This vulnerability is known as CVE-2016-8619. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in cURL and libcURL up to 7.50.3 (Network Utility Software). It has been classified as very critical. This affects an unknown functionality of the component Kerberos. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The function `read_data()` in security.c in curl before version 7.51.0 is vulnerable to memory double free.

The weakness was published 11/03/2016 with Cure53 as 7.50.3 vulnerabilities as confirmed advisory (Website). It is possible to read the advisory at curl.haxx.se. This vulnerability is uniquely identified as CVE-2016-8619 since 10/12/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/29/2022).

The vulnerability scanner Nessus provides a plugin with the ID 94572 (SUSE SLES11 Security Update : curl (SUSE-SU-2016:2714-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157987 (Oracle Enterprise Linux Security Update for curl (ELSA-2019-4652)).

Upgrading to version 7.51.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94572), SecurityFocus (BID 94100†) and SecurityTracker (ID 1037192†). Similar entries are available at VDB-90449, VDB-91385, VDB-91680 and VDB-91681. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.2

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
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: 94572
Nessus Name: SUSE SLES11 Security Update : curl (SUSE-SU-2016:2714-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 February-2017
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/libcURL 7.51.0

Timelineinfo

10/12/2016 🔍
11/02/2016 +21 days 🔍
11/03/2016 +1 days 🔍
11/03/2016 +0 days 🔍
11/03/2016 +0 days 🔍
11/04/2016 +1 days 🔍
11/04/2016 +0 days 🔍
08/01/2018 +635 days 🔍
09/29/2022 +1520 days 🔍

Sourcesinfo

Advisory: 7.50.3 vulnerabilities
Organization: Cure53
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-8619 (🔍)
GCVE (CVE): GCVE-0-2016-8619
GCVE (VulDB): GCVE-100-93255

OVAL: 🔍

SecurityFocus: 94100 - cURL CVE-2016-8619 Remote Security Vulnerability
SecurityTracker: 1037192

See also: 🔍

Entryinfo

Created: 11/04/2016 09:53
Updated: 09/29/2022 11:25
Changes: 11/04/2016 09:53 (59), 05/23/2019 18:17 (27), 09/29/2022 11:25 (14)
Complete: 🔍
Cache ID: 216::103

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