Multiple vulnerabilities in Go programming language



Published: 2021-07-04 | Updated: 2022-10-19
Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-33196
CVE-2021-33195
CVE-2021-33197
CVE-2021-33198
CWE-ID CWE-400
CWE-79
CWE-862
CWE-399
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 4 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU54521

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-33196

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when parsing archives. A remote attacker can pass a specially crafted .zip file to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.16 - 1.16.4, 1.15 - 1.15.12


CPE2.3 External links

http://bugzilla.redhat.com/show_bug.cgi?id=1965503
http://github.com/golang/go/issues/46242
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33912
http://go-review.googlesource.com/c/go/+/322949/
http://go-review.googlesource.com/c/go/+/322909/
http://go-review.googlesource.com/c/go/+/318909/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Cross-site scripting

EUVDB-ID: #VU56022

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-33195

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of data passed from DNS lookups. A remote attacker can send a specially crafted DNS reqponse and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.15 - 1.15.12, 1.16 - 1.16.4


CPE2.3 External links

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

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Missing Authorization

EUVDB-ID: #VU56023

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-33197

CWE-ID: CWE-862 - Missing Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization process.

The vulnerability exists due to an error in some configurations of ReverseProxy (from net/http/httputil). A remote attacker can drop arbitrary headers and bypass authorization process. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.16 - 1.16.4, 1.15 - 1.15.12


CPE2.3 External links

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

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

4) Resource management error

EUVDB-ID: #VU56024

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-33198

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper management of internal resources within the application when handling a large exponent to the math/big.Rat SetString or UnmarshalText method.  A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.16 - 1.16.4, 1.15 - 1.15.12


CPE2.3 External links

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

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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