Google Go 0.3.3 x-text Package infinite loop

Summaryinfo

A vulnerability, which was classified as problematic, was found in Google Go 0.3.3. Affected by this issue is some unknown functionality of the component x-text Package. Such manipulation leads to infinite loop. This vulnerability is uniquely identified as CVE-2020-14040. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Google Go 0.3.3 (Programming Language Software). Affected by this issue is some unknown functionality of the component x-text Package. The manipulation with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. CVE summarizes:

Go version v0.3.3 of the x/text package fixes a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String.

The weakness was disclosed 06/17/2020. This vulnerability is handled as CVE-2020-14040 since 06/12/2020. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/20/2025). The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 236611 (Alibaba Cloud Linux 3 : 0060: go-toolset:rhel8 (ALINUX3-SA-2021:0060)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236611). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Programming Language Software

Vendor

• Google

Name

• Go

Version

• 0.3.3

License

• open-source

Website

• Vendor: https://www.google.com/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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