Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-13935 CVE-2020-13934 |
CWE-ID | CWE-835 CWE-399 |
Exploitation vector | Network |
Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
Vulnerable software Subscribe |
Apache Tomcat Server applications / Web servers |
Vendor | Apache Foundation |
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU29723
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2020-13935
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop when processing payload length in a WebSocket frame. A remote attacker can send a specially crafted request to the application, consume all available system resources and cause denial of service conditions.
MitigationInstall updates from vendor's website.
Vulnerable software versionsApache Tomcat: 10.0.0-M1 - 10.0.0.0-M1, 9.0.0 - 9.0.36, 8.5.0 - 8.5.56, 7.0.27 - 7.0.104
http://seclists.org/oss-sec/2020/q3/24
http://tomcat.apache.org/security-10.html
http://tomcat.apache.org/security-9.html
http://tomcat.apache.org/security-8.html
http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.105
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?
EUVDB-ID: #VU29724
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2020-13934
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when processing h2 direct connections. A remote attacker can pass specially crafted HTTP/2 requests to the server and consume all available memory.
Install updates from vendor's website.
Vulnerable software versionsApache Tomcat: 10.0.0-M1 - 10.0.0.0-M1, 9.0.0 - 9.0.36, 8.5.1 - 8.5.56
http://seclists.org/oss-sec/2020/q3/25
http://tomcat.apache.org/security-10.html
http://tomcat.apache.org/security-9.html
http://tomcat.apache.org/security-8.html
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?