Inconsistent interpretation of HTTP requests in go (Alpine package)



Published: 2019-09-26
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-16276
CWE-ID CWE-444
Exploitation vector Network
Public exploit N/A
Vulnerable software
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go (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU21409

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16276

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 Go programming language accepts and normalizes HTTP requests with malformed HTTP/1.1 headers containing a space before the colon. A remote attacker can use a malformed request to bypass configured filtration and gain access to presumably restricted functionality.

Mitigation

Install update from vendor's website.

Vulnerable software versions

go (Alpine package): 1.11.4-r0 - 1.13-r0

External links

http://git.alpinelinux.org/aports/commit/?id=573b7537c7e1ab2732007a1d026a913613ca2d03
http://git.alpinelinux.org/aports/commit/?id=17caf1ca31bcf51f92d7f466d287824869ec3f25
http://git.alpinelinux.org/aports/commit/?id=971e4b11222464f77b1bb47c32f4f1c83cd89d86
http://git.alpinelinux.org/aports/commit/?id=2aa8f8a3facf89896330b6847713de7d92b4196a
http://git.alpinelinux.org/aports/commit/?id=c94518133ecb5493567729db077404b563149189


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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