CVE-2023-38497 Cargo not respecting umask when extracting crate archives
Local attackers can modify source code in shared Cargo caches due to improper file permissions, leading to arbitrary code execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-38497?
CVE-2023-38497 is a high-severity vulnerability in Fedoraproject Fedora, published on 4 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Cargo downloads the Rust project’s dependencies and compiles the project. Cargo prior to version 0.72.2, bundled with Rust prior to version 1.71.1, did not respect the umask when extracting crate archives on UNIX-like systems. If the user downloaded a crate containing files writeable by any local user, another local user could exploit this to change the source code compiled and executed by the current user. To prevent existing cached extractions from being exploitable, the Cargo binary version 0.72.2 included in Rust 1.71.1 or later will purge caches generated by older Cargo versions automatically. As a workaround, configure one's system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.
Which versions are affected by CVE-2023-38497?
2 open source packages ship an affected version, including cargo. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
cargo crates.io | All versions | 0.72.2 |
cargo crates.io | All versions | 0.72.2 |
Linux distribution packages (38)
cargo AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
clippy AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-analysis AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-analyzer AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-debugger-common AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-doc AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-gdb AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-lldb AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-src AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-std-static AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-std-static-wasm32-unknown-unknown AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-std-static-wasm32-wasi AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rust-toolset AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
rustfmt AlmaLinux:8 | All versions | 1.66.1-2.module_el8.8.0+3604+b9bee1fc |
cargo AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
clippy AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-analysis AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-analyzer AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-debugger-common AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-doc AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-gdb AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-lldb AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-src AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-std-static AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-std-static-wasm32-unknown-unknown AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-std-static-wasm32-wasi AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-toolset AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rustfmt AlmaLinux:9 | All versions | 1.66.1-2.el9_2 |
rust-toolset-1.66-cargo Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-clippy Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust-analysis Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust-analyzer Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust-debugger-common Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust-debuginfo Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
rust-toolset-1.66-rust-doc Red Hat:devtools:2023::el7 | All versions | 0:1.66.1-2.el7_9 |
Products include Fedoraproject Fedora, Rust-Lang Cargo.
How do I fix CVE-2023-38497?
Upgrade cargo to 0.72.2 or later.
Is CVE-2023-38497 being exploited?
There is no known exploitation of CVE-2023-38497 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2023-38497, ALSA-2023:4634, ALSA-2023:4635, AZL-28510, CLEANSTART-2026-SJ40187, DEBIAN-CVE-2023-38497 and 12 more.