Denial of service in Go programming language



Published: 2021-08-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-36221
CWE-ID CWE-362
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 one medium risk vulnerability.

1) Race condition

EUVDB-ID: #VU55668

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-36221

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in net/http/httputil ReverseProxy when handling ErrAbortHandler events. A remote attacker can trigger a race condition and crash the ReverseProxy.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.16 - 1.16.6, 1.15 - 1.15.14


CPE2.3 External links

http://groups.google.com/g/golang-announce/c/JvWG9FUUYT0
http://groups.google.com/forum/#!forum/golang-announce
http://groups.google.com/g/golang-announce/c/uHACNfXAZqk

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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