SB2018122803 - Denial of service in OpenLiteSpeed

Description

This security bulletin contains information about 4 vulnerabilities.

1) Denial of service (CVE-ID: N/A)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

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:Clear

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unspecified flaw. A remote attacker can try to bind a in-use listening port and cause the server to crash.

2) Buffer overflow (CVE-ID: N/A)

CWE-ID: CWE-120 - Buffer overflow

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:Clear

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to buffer overflow. A remote attacker can trigger memory corruption and cause the server to crash.

3) Memory leak (CVE-ID: N/A)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The weakness exists due to memory leak when reusing a ClientInfo object. A remote attacker can obtain potentially sensitive information or cause the server to crash.

4) Denial of service (CVE-ID: N/A)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

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:Clear

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unspecified flaw. A remote attacker can cause HTTP/2 and Spdy server to crash.

Remediation

Install update from vendor's website.

References

• https://openlitespeed.org/release-log/version-1-4-x/#V1.4.41