SB2017051016 - Multiple vulnerabilities in Microsoft ASP.NET Core
Published: May 10, 2017 Updated: May 15, 2017
Security Bulletin ID
SB2017051016
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Denial of service (CVE-ID: CVE-2017-0247)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote unauthenticated user to cause DoS condition on the target system.
The weakness exists due to improper validation of user-input requests by ASP.NET Core. A remote attacker can send a specially crafted web request and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
2) Privilege escalation (CVE-ID: CVE-2017-0249)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated attacker to gain elevated privileges on the target system.
The weakness exists due to improper validation of user-input requests by ASP.NET Core. A remote attacker can send a specially crafted web request and gain elevated privileges.
3) Spoofing attack (CVE-ID: CVE-2017-0256)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated attacker to perform spoofing attack.
The weakness exists due to improper validation of user-input requests by ASP.NET Core. A remote attacker can send a specially crafted web request and perform a spoofing attack to access the system.
Successful exploitation of the vulnerability may result in unauthorized access to entire database.
Remediation
Install update from vendor's website.