Multiple vulnerabilities in Twisted Web component in Synapse



Published: 2020-03-24
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-10108
CVE-2020-10109
CWE-ID CWE-444
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Synapse
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor Matrix.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU26355

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10108

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to an error when processing two Content-length headers, sent within one HTTP request that caused the request body to be interpreted as a pipelined request. A remote attacker can send a specially crafted HTTP request to the affected web server and posing HTTP cache or perform other attacks against web application.

Mitigation

Update to version 1.12.0.

Vulnerable software versions

Synapse: 1.6.0 - 1.11.1

External links

http://github.com/matrix-org/synapse/releases/tag/v1.12.0


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?

No. We are not aware of malware exploiting this vulnerability.

2) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU26356

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10109

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to insufficient input validation when processing Content-length and a Chunked encoding header, sent within one HTTP request. The Content-length header took precedence and the remainder of the request body was interpreted as a pipelined request. A remote attacker can send a specially crafted HTTP request to the affected web server and poison HTTP cache or perform other attacks against web application.

Mitigation

Update to version 1.12.0.

Vulnerable software versions

Synapse: 1.6.0 - 1.11.1

External links

http://github.com/matrix-org/synapse/releases/tag/v1.12.0


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?

No. We are not aware of malware exploiting this vulnerability.



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