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Fencer Vulns
high 7.9

CVE-2023-38497 json

Cargo not respecting umask when extracting crate archives

published 2023-08-03 3 y ago modified 2026-06-17 4 mo ago also GHSA-j3xp-wfr4-hx87 , EUVD-2023-2308

cvss
7.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

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`.

Patch / fix

  • crates.io cargo 0.72.2
  • rust-lang cargo 0.72.2
  • rust-cargo Debian 14, Debian 13 0.76.0-1

debian advisories DEBIAN-CVE-2023-38497

  • rustc Ubuntu 24.04 LTS 1.71.1+dfsg0ubuntu2-0ubuntu1
  • cargo Ubuntu Pro 16.04 LTS 0.47.0-1~exp1ubuntu1~16.04.1+esm1
  • cargo Ubuntu Pro 18.04 LTS 0.66.0+ds0ubuntu0.libgit2-0ubuntu0.18.04.1~esm1
  • cargo Ubuntu Pro 20.04 LTS 0.67.1+ds0ubuntu0.libgit2-0ubuntu0.20.04.2+esm1
  • cargo Ubuntu Pro 22.04 LTS 0.67.1+ds0ubuntu0.libgit2-0ubuntu0.22.04.2+esm1
  • rust-cargo Ubuntu Pro 22.04 LTS 0.57.0-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-38497

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rust-toolset-1.66-rust devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-cargo devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-clippy devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-rustfmt devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-rust-gdb devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-rust-src devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-rust-lldb devtools 2023 1.66.1-2.el7_9
  • rust-toolset-1.66-rust-analysis devtools 2023 1.66.1-2.el7_9

red hat advisories RHSA-2024:3418RHSA-2024:3428RHSA-2023:4651RHSA-2023:4635RHSA-2023:4634

  • rust1.71 SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4, openSUSE Leap 15.5 +1 more 1.71.1-150400.9.6.1

suse advisories SUSE-SU-2023:3251-1

  • rust1.71 openSUSE Tumbleweed 1.71.1-1.1

opensuse advisories openSUSE-SU-2024:13101-1

  • rust AlmaLinux 9 1.66.1-2.el9_2
  • cargo AlmaLinux 9 1.66.1-2.el9_2
  • clippy AlmaLinux 9 1.66.1-2.el9_2
  • rustfmt AlmaLinux 9 1.66.1-2.el9_2
  • rust-gdb AlmaLinux 9 1.66.1-2.el9_2
  • rust-src AlmaLinux 9 1.66.1-2.el9_2
  • rust-lldb AlmaLinux 9 1.66.1-2.el9_2
  • rust-toolset AlmaLinux 9 1.66.1-2.el9_2

almalinux advisories ALSA-2023:4634ALSA-2023:4635

  • rust Rocky Linux 9 1.66.1-2.el9_2
  • rust Rocky Linux 8 1.66.1-2.module+el8.8.0+1428+0690fcea

rocky linux advisories RLSA-2023:4634RLSA-2023:4635

  • rust Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.71.1-r0
  • chromium-rust Alpine 3.24 1.71.1-r0

alpine advisories ALPINE-CVE-2023-38497

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rust CBL-Mariner 2.0 1.72.0-2

azure linux advisories AZL-28510

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-38497 updated cvss 6.7

rust-cargo: cargo does not respect the umask when extracting dependencies

  • Red Hat Developer Tools for Red Hat Enterprise Linux Server (v. 7) rust-toolset-1.66-rust 1.66.1-2.el7_9, rust-toolset-1.66-cargo 1.66.1-2.el7_9, rust-toolset-1.66-clippy 1.66.1-2.el7_9, rust-toolset-1.66-rustfmt 1.66.1-2.el7_9, rust-toolset-1.66-rust-gdb 1.66.1-2.el7_9, rust-toolset-1.66-rust-src 1.66.1-2.el7_9, +4 more Red Hat Developer Tools for Red Hat Enterprise Linux Workstation (v. 7) rust-toolset-1.66-rust 1.66.1-2.el7_9, rust-toolset-1.66-cargo 1.66.1-2.el7_9, rust-toolset-1.66-clippy 1.66.1-2.el7_9, rust-toolset-1.66-rustfmt 1.66.1-2.el7_9, rust-toolset-1.66-rust-gdb 1.66.1-2.el7_9, rust-toolset-1.66-rust-src 1.66.1-2.el7_9, +4 more
    fixed: vendor fix “We recommend configuring your system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.” RHSA-2023:4651
  • Red Hat Enterprise Linux AppStream (v. 8) rust 1.66.1-2.module+el8.8.0+19613+f0bba33b, cargo 1.66.1-2.module+el8.8.0+19613+f0bba33b, clippy 1.66.1-2.module+el8.8.0+19613+f0bba33b, rustfmt 1.66.1-2.module+el8.8.0+19613+f0bba33b, rust-gdb 1.66.1-2.module+el8.8.0+19613+f0bba33b, rust-src 1.66.1-2.module+el8.8.0+19613+f0bba33b, +7 more
    fixed: vendor fix “We recommend configuring your system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.” RHSA-2023:4635
  • Red Hat Enterprise Linux AppStream (v. 9) rust 1.66.1-2.el9_2, cargo 1.66.1-2.el9_2, clippy 1.66.1-2.el9_2, rustfmt 1.66.1-2.el9_2, rust-gdb 1.66.1-2.el9_2, rust-src 1.66.1-2.el9_2, +7 more
    fixed: vendor fix “We recommend configuring your system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.” RHSA-2023:4634
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) rls 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, rust 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, cargo 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, clippy 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, rustfmt 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, rust-gdb 1.58.1-1.module+el8.6.0+21522+a4bc17c1.1, +7 more
    fixed: vendor fix “We recommend configuring your system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.” RHSA-2024:3428
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) rls 1.58.1-1.el9_0.1, rust 1.58.1-1.el9_0.1, cargo 1.58.1-1.el9_0.1, clippy 1.58.1-1.el9_0.1, rustfmt 1.58.1-1.el9_0.1, rust-gdb 1.58.1-1.el9_0.1, +6 more
    fixed: vendor fix “We recommend configuring your system to prevent other local users from accessing the Cargo directory, usually located in `~/.cargo`.” RHSA-2024:3418

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
NVD 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
GitHub 3.1 7.9 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
crates.io cargo
<0.72.2
0.72.2

Affected products

  • rust-lang cargo

Classification

Weakness
  • CWE-278 Insecure Preserved Inherited Permissions
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.