#VU21783 Inconsistent interpretation of HTTP requests in Go programming language


Published: 2019-10-15

Vulnerability identifier: #VU21783

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-5739

CWE-ID: CWE-444

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Go programming language
Universal components / Libraries / Scripting languages

Vendor: Google

Description

The vulnerability allows a remote attacker to conduct an HTTP request smuggling attack on the target system.

The vulnerability exists due to the "net/http" library in "net/textproto/reader.go" does not properly parse HTTP header keys. A remote attacker can send a specially crafted HTTP request and conduct HTTP request smuggling attacks via a space instead of a hyphen, as demonstrated by "Content Length" instead of "Content-Length."


Mitigation
Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.4 - 1.4.2, 1.3 - 1.3.3, 1.2 - 1.2.2, 1.1 - 1.1.2, 1.0.1 - 1.0.3

External links
http://github.com/golang/go/commit/117ddcb83d7f42d6aa72241240af99ded81118e9

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.


Latest bulletins with this vulnerability


Multiple vulnerabilities in Go
Inconsistent interpretation of HTTP requests in go (Alpine package)
Amazon Linux AMI update for golang, docker