OpenSSL up to 1.0.1t/1.0.2h/1.1.0 OCSP Status Request Extension t1_lib.c resource management

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in OpenSSL up to 1.0.1t/1.0.2h/1.1.0. This affects an unknown function in the library t1_lib.c of the component OCSP Status Request Extension. Performing a manipulation results in resource management. This vulnerability is cataloged as CVE-2016-6304. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OpenSSL up to 1.0.1t/1.0.2h/1.1.0 (Network Encryption Software). This affects some unknown functionality in the library t1_lib.c of the component OCSP Status Request Extension. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.

The bug was discovered 09/22/2016. The weakness was shared 09/26/2016 by Karthik Bhargavan as USN-3087-1 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2016-6304 since 07/26/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 104047 (Oracle Integrated Lights Out Manager (ILOM) < 3.2.6 Multiple Vulnerabilities (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316384 (Cisco Unity Express OpenSSL Multiple Vulnerabilities (cisco-sa-20160927-openssl)).

Upgrading to version 1.0.1u, 1.0.2i or 1.1.0a eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104047) and SecurityFocus (BID 92630†). The entries VDB-87879, VDB-88080, VDB-90396 and VDB-90937 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Network Encryption Software

Name

• OpenSSL

Version

• 1.0.1a
• 1.0.1b
• 1.0.1c
• 1.0.1d
• 1.0.1e
• 1.0.1f
• 1.0.1g
• 1.0.1h
• 1.0.1i
• 1.0.1j
• 1.0.1k
• 1.0.1l
• 1.0.1m
• 1.0.1n
• 1.0.1o
• 1.0.1p
• 1.0.1q
• 1.0.1r
• 1.0.1s
• 1.0.1t
• 1.0.2
• 1.0.2a
• 1.0.2b
• 1.0.2c
• 1.0.2d
• 1.0.2e
• 1.0.2f
• 1.0.2g
• 1.0.2h
• 1.1.0

License

• open-source

Support

• end of life (old version)

Website

• Product: https://www.openssl.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

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• 🔍
• 🔍

Video

Youtube: Not available anymore

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 104047
Nessus Name: Oracle Integrated Lights Out Manager (ILOM) < 3.2.6 Multiple Vulnerabilities (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-749
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: OpenSSL 1.0.1u/1.0.2i/1.1.0a
Patch: 2c0d295e26306e15a92eb23a84a1802005c1c137

Timelineinfo

07/26/2016 🔍
08/24/2016 +29 days 🔍
09/22/2016 +29 days 🔍
09/26/2016 +4 days 🔍
09/26/2016 +0 days 🔍
09/27/2016 +1 days 🔍
10/18/2017 +386 days 🔍
10/20/2017 +2 days 🔍
09/21/2022 +1797 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: USN-3087-1⛔
Researcher: Karthik Bhargavan
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6304 (🔍)
GCVE (CVE): GCVE-0-2016-6304
GCVE (VulDB): GCVE-100-92199

OVAL: 🔍

SecurityFocus: 92630 - SSL/TLS Protocol CVE-2016-2183 Information Disclosure Vulnerability
SecurityTracker: 1036878

See also: 🔍

Entryinfo

Created: 09/27/2016 10:49
Updated: 09/21/2022 13:22
Changes: 09/27/2016 10:49 (65), 07/17/2019 20:04 (23), 09/21/2022 13:22 (5)
Complete: 🔍
Cache ID: 216:EFF:103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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