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CVE-2023-40030— Malicious dependencies can inject arbitrary JavaScript into cargo-generated timing reports

Quick assessment

Affected
rust-lang cargo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rust是美国Mozilla基金会的一款通用、编译型编程语言。 Rust 1.60.0至1.72之前版本存在跨站脚本漏洞，该漏洞源于没有正确转义Cargo功能名称，导致存在跨站脚本（XSS）漏洞。

CVSS 6.1 · Medium EPSS 0.90% · P58
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I. Basic Information for CVE-2023-40030

Vulnerability Information
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Vulnerability Title
Malicious dependencies can inject arbitrary JavaScript into cargo-generated timing reports
Source: CVE Program / CVE List V5
Vulnerability Description
Cargo downloads a Rust project’s dependencies and compiles the project. Starting in Rust 1.60.0 and prior to 1.72, Cargo did not escape Cargo feature names when including them in the report generated by `cargo build --timings`. A malicious package included as a dependency may inject nearly arbitrary HTML here, potentially leading to cross-site scripting if the report is subsequently uploaded somewhere. The vulnerability affects users relying on dependencies from git, local paths, or alternative registries. Users who solely depend on crates.io are unaffected. Rust 1.60.0 introduced `cargo build --timings`, which produces a report of how long the different steps of the build process took. It includes lists of Cargo features for each crate. Prior to Rust 1.72, Cargo feature names were allowed to contain almost any characters (with some exceptions as used by the feature syntax), but it would produce a future incompatibility warning about them since Rust 1.49. crates.io is far more stringent about what it considers a valid feature name and has not allowed such feature names. As the feature names were included unescaped in the timings report, they could be used to inject Javascript into the page, for example with a feature name like `features = ["<img src='' onerror=alert(0)"]`. If this report were subsequently uploaded to a domain that uses credentials, the injected Javascript could access resources from the website visitor. This issue was fixed in Rust 1.72 by turning the future incompatibility warning into an error. Users should still exercise care in which package they download, by only including trusted dependencies in their projects. Please note that even with these vulnerabilities fixed, by design Cargo allows arbitrary code execution at build time thanks to build scripts and procedural macros: a malicious dependency will be able to cause damage regardless of these vulnerabilities. crates.io has server-side checks preventing this attack, and there are no packages on crates.io exploiting these vulnerabilities. crates.io users still need to excercise care in choosing their dependencies though, as remote code execution is allowed by design there as well.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Rust 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rust是美国Mozilla基金会的一款通用、编译型编程语言。 Rust 1.60.0至1.72之前版本存在跨站脚本漏洞，该漏洞源于没有正确转义Cargo功能名称，导致存在跨站脚本（XSS）漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rust-lang cargo >= 1.60.0, < 1.72 -

II. Public POCs for CVE-2023-40030

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III. Intelligence Information for CVE-2023-40030

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Patches & Fixes for CVE-2023-40030 (3)

Vendor Advisories for CVE-2023-40030 (1)

IV. Related Vulnerabilities

Same product: cargo
Same vendor: rust-lang
Same weakness: CWE-79

V. Comments for CVE-2023-40030

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