Multiple vulnerabilities in Golang Go



Published: 2021-03-15
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-27919
CVE-2021-27918
CWE-ID CWE-20
CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Go programming language
Universal components / Libraries / Scripting languages

Vendor Google

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU51485

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-27919

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the Reader.Open API when use a ZIP archive containing files start with “../”. A remote attacker can trick a victim to open a specially crafted ZIP archive and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.16.0


CPE2.3 External links

http://groups.google.com/g/golang-announce/c/MfiLYjG-RAw

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Infinite loop

EUVDB-ID: #VU51486

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-27918

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when using xml.NewTokenDecoder with a custom TokenReader. A remote attacker can trick a victim to open a specially crafted XML content and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.15 - 1.15.8, 1.16.0


CPE2.3 External links

http://groups.google.com/g/golang-announce/c/MfiLYjG-RAw

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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