sudo-rs Allows Low Privilege Users to Discover the Existence of Files in Inaccessible FoldersGHSA-98cv-wqjx-wx8f
LOWGHSA-98cv-wqjx-wx8f is a low-severity (CVSS 3.3) CWE-497 vulnerability in sudo-rs. A fix is available for sudo-rs — see the affected versions and patch details below.
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-98cv-wqjx-wx8f.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
sudo-rsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
Summary
Users with no (or very limited) sudo privileges can determine whether files exists in folders that they otherwise cannot access using sudo --list <pathname>.
PoC
As root:
# mkdir /tmp/foo
# chmod a-rwx /tmp/foo
# touch /tmp/foo/secret_file
As a user without any (or limited) sudo rights:
$ sudo --list /tmp/foo/nonexistent_file
sudo-rs: '/tmp/foo/nonexistent_file': command not found
$ $ sudo --list /tmp/foo/secret_file
sudo-rs: Sorry, user eve may not run sudo on host.
I.e. the user can distinguish whether files exist.
Related
Original sudo (vulnerable version tested by us: 1.9.15p5) exhibited similar behaviour for files with the executable bit set.
Impact
Users with local access to a machine can discover the existence/non-existence of certain files, revealing potentially sensitive information in the file names. This information can also be used in conjunction with other attacks.
Credits
This issue was identified by sudo-rs developer Marc Schoolderman
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | sudo-rs | all versions | 0.2.6cargo update -p sudo-rs --precise 0.2.6 |
Affected Products
sudotrifectatechDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sudo-rs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update sudo-rs to 0.2.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-98cv-wqjx-wx8f is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is GHSA-98cv-wqjx-wx8f in your dependencies?
Find it across crates.io, including transitive dependencies.