CVE-2018-17143 golang.org/x/net/html has Improper Restriction of Operations within the Bounds of a Memory Buffer

What is CVE-2018-17143?

CVE-2018-17143 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 17 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The html package (aka x/net/html) through 2018-09-17 in Go mishandles <template><tBody><isindex/action=0>, leading to a "panic: runtime error" in inBodyIM in parse.go during an html.Parse call.

Weakness: CWE-119

Which versions are affected by CVE-2018-17143?

3 open source packages ship an affected version, including golang.org/x/net. It affects 2 products.

Products include Fedoraproject Fedora, Golang Net.

How do I fix CVE-2018-17143?

Upgrade golang.org/x/net to 0.0.0-20180921000356-2f5d2388922f or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-17143 being exploited?

There is no known exploitation of CVE-2018-17143 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fcf9-6fv2-fc5v, GO-2022-0193.