OpenSSL 1.1.0/1.1.0a/1.1.0b TLS access control

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in OpenSSL 1.1.0/1.1.0a/1.1.0b. Affected by this vulnerability is an unknown functionality of the component TLS. Executing a manipulation can lead to access control. The identification of this vulnerability is CVE-2016-7054. The attack may be launched remotely. Furthermore, there is an exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OpenSSL 1.1.0/1.1.0a/1.1.0b (Network Encryption Software). It has been declared as problematic. This vulnerability affects an unknown part of the component TLS. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect availability. CVE summarizes:

In OpenSSL 1.1.0 before 1.1.0c, TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS.

The weakness was shared 11/10/2016 by Robert ?wi?cki as 20161110.txt as confirmed security advisory (Website). The advisory is shared for download at openssl.org. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2016-7054. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 46 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 94691 (FreeBSD : openssl -- multiple vulnerabilities (50751310-a763-11e6-a881-b499baebfeaf)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38649 (OpenSSL Multiple Vulnerabilities (OpenSSL Security Advisory 20161110)).

Upgrading to version 1.1.0c 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 Exploit-DB (40899), Tenable (94691), SecurityFocus (BID 94238†) and SecurityTracker (ID 1037261†). The entries VDB-93545, VDB-93546, VDB-101079 and VDB-101221 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94691
Nessus Name: FreeBSD : openssl -- multiple vulnerabilities (50751310-a763-11e6-a881-b499baebfeaf)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 800489
OpenVAS Name: OpenSSL Multiple Vulnerabilities -Nov 16 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: OpenSSL 1.1.0c

Timelineinfo

08/23/2016 🔍
09/25/2016 +33 days 🔍
11/10/2016 +46 days 🔍
11/10/2016 +0 days 🔍
11/10/2016 +0 days 🔍
11/10/2016 +0 days 🔍
05/04/2017 +175 days 🔍
10/24/2024 +2730 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: 20161110.txt
Researcher: Robert ?wi?cki
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2016-7054 (🔍)
GCVE (CVE): GCVE-0-2016-7054
GCVE (VulDB): GCVE-100-93544

OVAL: 🔍

SecurityFocus: 94238
SecurityTracker: 1037261 - OpenSSL Multiple Bugs Let Remote Users Cause the Target Application to Crash

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/10/2016 20:08
Updated: 10/24/2024 13:20
Changes: 11/10/2016 20:08 (54), 02/24/2017 16:48 (24), 09/30/2022 20:34 (3), 09/30/2022 20:41 (11), 09/30/2022 20:48 (1), 10/24/2024 13:20 (14)
Complete: 🔍
Cache ID: 216::103

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