CVE-2023-39318 — Improper handling of HTML-like comments in script contexts in html/template

Affected: Go standard library html/template

The html/template package does not properly handle HTML-like "" comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack.

USN-6574-1 — Go vulnerabilities

Affected: Ubuntu:20.04:LTS: golang-1.20, Ubuntu:20.04:LTS: golang-1.21, Ubuntu:22.04:LTS: golang-1.20, Ubuntu:22.04:LTS: golang-1.21

Takeshi Kaneko discovered that Go did not properly handle comments and special tags in the script context of html/template module. An attacker could possibly use this issue to inject Javascript code and perform a cross site scripting attack. This issue only affected Go 1.20 in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-39318, CVE-2023-39319)

It was discovered that Go did not properly validate the "//go:cgo_" directives during compilation. An attacker could possibly use this issue to inject arbitrary code during compile time. (CVE-2023-39323)

It was discovered that Go did not limit the number of simultaneously executing handler goroutines in the net/http module. An attacker could possibly use this issue to cause a panic resulting into a denial of service. (CVE-2023-39325, CVE-2023-44487)

It was discovered that the Go net/http module did not properly validate the chunk extensions reading from a request or response body. An attacker could possibly use this issue to read sensitive information. (CVE-2023-39326)

It was discovered that Go did not properly validate the insecure "git://" protocol when using go get to fetch a module with the ".git" suffix. An attacker could possibly use this issue to bypass secure protocol checks. (CVE-2023-45285)

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CVE-2023-39318 — Improper handling of HTML-like comments in script contexts in html/template

USN-6574-1 — Go vulnerabilities