Risk | Critical |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2015-1635 |
CWE-ID | CWE-190 |
Exploitation vector | Network |
Public exploit | Vulnerability #1 is being exploited in the wild. |
Vulnerable software Subscribe |
Windows Server Operating systems & Components / Operating system Windows Operating systems & Components / Operating system Microsoft IIS Server applications / Web servers |
Vendor | Microsoft |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
EUVDB-ID: #VU71091
Risk: Critical
CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2015-1635
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the UlAdjustRangeToContentSize() function within HTTP.sys driver when handling HTTP requests. A remote attacker can a specially crafted HTTP request to the affected web server, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows Server: 2008 - 2012 R2
Windows: 7 - 8.1
Microsoft IIS: 7.0 - 10.0
External linkshttp://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html
http://www.osvdb.org/120629
http://www.securityfocus.com/bid/74013
http://www.securitytracker.com/id/1032109
http://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034
http://www.exploit-db.com/exploits/36773/
http://www.exploit-db.com/exploits/36776/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.