CVE catalog

CVE-2024-43402

rustc: CVE-2024-43402

Severity: High · CVSS 8.1CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published: Sep 4, 2024, 4:15:06 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.74% · Oct 25, 2026

Rust is a programming language. The fix for CVE-2024-24576, where `std::process::Command` incorrectly escaped arguments when invoking batch files on Windows, was incomplete. Prior to Rust version 1.81.0, it was possible to bypass the fix when the batch file name had trailing whitespace or periods (which are ignored and stripped by Windows). To determine whether to apply the `cmd.exe` escaping rules, the original fix for the vulnerability checked whether the command name ended with `.bat` or `.cmd`. At the time that seemed enough, as we refuse to invoke batch scripts with no file extension. Windows removes trailing whitespace and periods when parsing file paths. For example, `.bat. .` is interpreted by Windows as `.bat`, but the original fix didn't check for that. Affected users who are using Rust 1.77.2 or greater can remove the trailing whitespace (ASCII 0x20) and trailing periods (ASCII 0x2E) from the batch file name to bypass the incomplete fix and enable the mitigations. Users are affected if their code or one of their dependencies invoke a batch script on Windows with trailing whitespace or trailing periods in the name, and pass untrusted arguments to it. Rust 1.81.0 will update the standard library to apply the CVE-2024-24576 mitigations to all batch files invocations, regardless of the trailing chars in the file name.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	rustc	sid	`1.97.1+dfsg1-1`	not affected
Debian	rustc	forky	`1.97.1+dfsg1-1`	not affected
Debian	rustc	trixie	`1.85.1+dfsg1-1+deb13u1`	not affected
Debian	rustc	bookworm	`1.63.0+dfsg1-2`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	rustc	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	rustc	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	rustc	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	rustc	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libstd-rust-1.63]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · arm64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[libstd-rust-dev]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · arm64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[libstd-rust-dev-wasm32]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[libstd-rust-dev-windows]Not affected
Source package: [rustc]
Details (1)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-all]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rustc]Not affected
Details (2)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · arm64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-clippy]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · arm64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-doc]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rustfmt]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · amd64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · arm64 · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-gdb]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-lldb]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
[rust-src]Not affected
Source package: [rustc]
Details (2)
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm
- 1.63.0+dfsg1-2 · all · bookworm
  Not affected
  dsa · rustc · debian · bookworm

Observed: Oct 27, 2026, 3:58:05 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [Red Hat security advisories and VEX]