SB2018011603 - Multiple vulnerabilities in SoftEther VPN
Published: January 16, 2018
Security Bulletin ID
SB2018011603
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
11
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 vulnerabilities.
1) Buffer over-read (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to buffer overread in ParseL2TPPacket(). A remote attacker can trigger memory corruption and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
2) Memory corruption (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to boundary error in IcmpParseResult. A remote attacker can trigger memory corruption and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
3) Memory corruption (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to missing bounds check in ParseUDP(). A remote attacker can trigger invalid memory access and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
4) Out-of-bounds read (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to out-of-bounds read in IPsec_PPP.c. A remote attacker can trigger invalid memory access and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
5) Memory corruption (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to overlapping parameters to memcpy() via StrToIp6(). A remote attacker can trigger memory corruption and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
6) Memory corruption (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to PACK ReadValue() crash. A remote attacker can trigger memory corruption and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
7) Memory corruption (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to potential use of uninitialized memory via IPToInAddr6(). A remote attacker can trigger memory corruption and cause the running server process to crash.
Successful exploitation of the vulnerability results in denial of service.
8) Resource exhaustion (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to memory leak in NnReadDnsRecord. A remote attacker can trigger excessive memory exhaustion and cause the running server process to crash.
9) Resource exhaustion (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to memory leak in RadiusLogin(). A remote attacker can trigger excessive memory exhaustion and cause the running server process to crash.
10) Resource exhaustion (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to memory leak via ParsePacketIPv4WithDummyMacHeader. A remote attacker can trigger excessive memory exhaustion and cause the running server process to crash.
11) Resource exhaustion (CVE-ID: N/A)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to memory leak in OpenVPN server code. A remote attacker can trigger excessive memory exhaustion and cause the running server process to crash.
Remediation
Install update from vendor's website.