Amazon Linux 2023 : cargo, clippy, rust (ALAS2023-2024-497)

medium Nessus Plugin ID 189320

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Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2024-497 advisory.

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. (CVE-2023-40030)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'dnf update rust --releasever 2023.3.20240122' to update your system.

Plugin Details

Severity: Medium

ID: 189320

File Name: al2023_ALAS2023-2024-497.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 1/23/2024

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2023-40030

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:rustfmt-debuginfo, p-cpe:/a:amazon:linux:cargo, p-cpe:/a:amazon:linux:rust, p-cpe:/a:amazon:linux:rust-lldb, p-cpe:/a:amazon:linux:rust-debuginfo, p-cpe:/a:amazon:linux:rust-analyzer-debuginfo, p-cpe:/a:amazon:linux:rust-debugsource, p-cpe:/a:amazon:linux:rust-debugger-common, p-cpe:/a:amazon:linux:rustfmt, p-cpe:/a:amazon:linux:clippy-debuginfo, p-cpe:/a:amazon:linux:rust-analyzer, p-cpe:/a:amazon:linux:rust-std-static-wasm32-unknown-unknown, p-cpe:/a:amazon:linux:rust-src, p-cpe:/a:amazon:linux:rust-std-static-wasm32-wasi, p-cpe:/a:amazon:linux:cargo-debuginfo, p-cpe:/a:amazon:linux:rust-gdb, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:rust-doc, p-cpe:/a:amazon:linux:rust-std-static, p-cpe:/a:amazon:linux:rust-analysis, p-cpe:/a:amazon:linux:clippy

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 1/19/2024

Vulnerability Publication Date: 8/24/2023

Reference Information

CVE: CVE-2023-40030

Detections

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