CVE-2017-3733
Encrypt-Then-Mac renegotiation crash
Description
During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
INFO
Published Date :
May 4, 2017, 7:29 p.m.
Last Modified :
April 20, 2025, 1:37 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source | 
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] | 
Solution
- Upgrade to OpenSSL version 1.1.0e or later.
- Update the affected package.
Public PoC/Exploit Available at Github
                                            CVE-2017-3733 has a 4 public
                                            PoC/Exploit available at Github.
                                            Go to the Public Exploits tab to see the list.
                                        
References to Advisories, Solutions, and Tools
                                            Here, you will find a curated list of external links that provide in-depth
                                            information, practical solutions, and valuable tools related to
                                            CVE-2017-3733.
                                        
CWE - Common Weakness Enumeration
            While CVE identifies
            specific instances of vulnerabilities, CWE categorizes the common flaws or
            weaknesses that can lead to vulnerabilities. CVE-2017-3733 is
            associated with the following CWEs:
        
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
            (CAPEC)
            stores attack patterns, which are descriptions of the common attributes and
            approaches employed by adversaries to exploit the CVE-2017-3733
            weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Finding potential software vulnerabilities from git commit messages
Python
Finding potential software vulnerabilities from git commit messages
software-vulnerability software-vulnerabilities cve-scanning cve-search git-security osint
Python
a basic ruby command like to check cvedetails for details on a given product
Ruby Shell Gherkin
Results are limited to the first 15 repositories due to potential performance issues.
			The following list is the news that have been mention
			CVE-2017-3733 vulnerability anywhere in the article.
		
                The following table lists the changes that have been made to the
                CVE-2017-3733 vulnerability over time.
            
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
- 
                            CVE Modified by af854a3a-2127-422b-91ae-364da2661108Nov. 21, 2024 Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Added Reference http://www.securityfocus.com/bid/96269 Added Reference http://www.securitytracker.com/id/1037846 Added Reference https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2 Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us Added Reference https://www.openssl.org/news/secadv/20170216.txt Added Reference https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html 
- 
                            CVE Modified by [email protected]May. 14, 2024 Action Type Old Value New Value 
- 
                            CVE Modified by [email protected]Apr. 23, 2019 Action Type Old Value New Value Added Reference https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html [No Types Assigned] 
- 
                            CVE Modified by [email protected]Feb. 14, 2018 Action Type Old Value New Value Added Reference https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2 [No Types Assigned] 
- 
                            CVE Modified by [email protected]Jan. 18, 2018 Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html [No Types Assigned] 
- 
                            CVE Modified by [email protected]Oct. 20, 2017 Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned] 
- 
                            CVE Modified by [email protected]Jul. 25, 2017 Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1037846 [No Types Assigned] 
- 
                            Reanalysis by [email protected]Jun. 20, 2017 Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* (and previous) OR *cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.1.0c:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* 
- 
                            Initial Analysis by [email protected]May. 17, 2017 Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://www.openssl.org/news/secadv/20170216.txt No Types Assigned https://www.openssl.org/news/secadv/20170216.txt Vendor Advisory Changed Reference Type http://www.securityfocus.com/bid/96269 No Types Assigned http://www.securityfocus.com/bid/96269 Third Party Advisory, VDB Entry Changed Reference Type https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us No Types Assigned https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us Third Party Advisory, VDB Entry Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:a:openssl:openssl:1.1.0d:*:*:*:*:*:*:* (and previous) Added CPE Configuration OR *cpe:2.3:a:hp:operations_agent:11.14:*:*:*:*:*:*:* *cpe:2.3:a:hp:operations_agent:11.15:*:*:*:*:*:*:* 
- 
                            CVE Modified by [email protected]May. 10, 2017 Action Type Old Value New Value Added Reference https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us [No Types Assigned] 
- 
                            CVE Modified by [email protected]May. 06, 2017 Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/96269 [No Types Assigned] 
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
7.79 }} 2.01%
score
0.91556
percentile
 
                         
                         
                         
                                             
                                            