CVE-2015-1637
Microsoft Windows Schannel TLS State Restriction flaws lead to EXPORT_RSA Cipher-Downgrade Attacks
Description
Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-1067.
INFO
Published Date :
March 6, 2015, 5:59 p.m.
Last Modified :
April 7, 2021, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
8.6
Public PoC/Exploit Available at Github
CVE-2015-1637 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2015-1637
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2015-1637.
| URL | Resource |
|---|---|
| http://web.archive.org/web/20150321220028/https://freakattack.com/ | |
| http://www.securityfocus.com/bid/72965 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1031833 | Third Party Advisory VDB Entry |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031 | Patch Vendor Advisory |
| https://freakattack.com/ | Vendor Advisory |
| https://technet.microsoft.com/library/security/3046015 | Patch Vendor Advisory |
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).
Ansible Playbooks to work with Deep Security and Workload Security
ansible deep-security trendmicro workload-security
Shell Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-1637 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-1637 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 07, 2021
Action Type Old Value New Value Added Reference http://web.archive.org/web/20150321220028/https://freakattack.com/ [No Types Assigned] -
Modified Analysis by [email protected]
May. 14, 2019
Action Type Old Value New Value Changed Reference Type http://www.securityfocus.com/bid/72965 No Types Assigned http://www.securityfocus.com/bid/72965 Third Party Advisory, VDB Entry Changed Reference Type https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031 No Types Assigned https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031 Patch, Vendor Advisory Changed Reference Type http://www.securitytracker.com/id/1031833 No Types Assigned http://www.securitytracker.com/id/1031833 Third Party Advisory, VDB Entry Changed Reference Type https://technet.microsoft.com/library/security/3046015 Vendor Advisory https://technet.microsoft.com/library/security/3046015 Patch, Vendor Advisory Removed CPE Configuration OR *cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:*:sp1:x64:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:*:sp1:x86:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8:-:-:x64:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8:-:-:x86:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:pro_n:*:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:pro_n:*:x86:* *cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:datacenter:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:essentials:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:standard:*:*:* *cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 08, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_8.1:-:-:-:*:-:-:x86:* OR *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:pro_n:*:x86:* -
CPE Deprecation Remap by [email protected]
May. 08, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_8.1:-:-:-:*:-:-:x64:* OR *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:pro_n:*:x64:* -
CPE Deprecation Remap by [email protected]
May. 08, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:standard:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:standard:*:*:* -
CPE Deprecation Remap by [email protected]
May. 08, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:essentials:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:essentials:*:*:* -
CPE Deprecation Remap by [email protected]
May. 08, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:datacenter:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:datacenter:*:*:* -
CVE Modified by [email protected]
Oct. 12, 2018
Action Type Old Value New Value Removed Reference http://technet.microsoft.com/security/bulletin/MS15-031 [Vendor Advisory] Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/72965 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 27, 2015
Action Type Old Value New Value Changed CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N) (AV:N/AC:M/Au:N/C:N/I:P/A:N) -
CVE Modified by [email protected]
Mar. 26, 2015
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1031833 -
Modified Analysis by [email protected]
Mar. 12, 2015
Action Type Old Value New Value Changed Reference Type https://freakattack.com/ No Types Assigned https://freakattack.com/ Advisory Changed Reference Type http://technet.microsoft.com/security/bulletin/MS15-031 No Types Assigned http://technet.microsoft.com/security/bulletin/MS15-031 Advisory -
CVE Modified by [email protected]
Mar. 12, 2015
Action Type Old Value New Value Changed Description Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-2235. Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-1067. Added Reference http://technet.microsoft.com/security/bulletin/MS15-031 -
CVE Modified by [email protected]
Mar. 10, 2015
Action Type Old Value New Value Changed Description Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue. Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-2235. Added Reference https://freakattack.com/ -
Modified Analysis by [email protected]
Mar. 07, 2015
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:datacenter:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:essentials:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:-:-:*:standard:*:*:* *cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:*:sp1:x64:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:*:sp1:x86:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8:-:-:x64:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8:-:-:x86:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:-:-:*:-:-:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:-:-:*:-:-:x86:* *cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Changed Reference Type https://technet.microsoft.com/library/security/3046015 No Types Assigned https://technet.microsoft.com/library/security/3046015 Advisory Added CWE CWE-310 -
Initial Analysis by [email protected]
Mar. 06, 2015
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-1637 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-2015-1637
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
96.35 }} 0.01%
score
0.99600
percentile