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Security Advisories: GSA_kwCzR0hTQS0yM3J4LWMzZzUtaHY5d84AA73I
Deno permission escalation vulnerability via open of privileged files with missing `--deny` flag
The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading /proc/self/environ may provide access equivalent to --allow-env, and writing /proc/self/mem may provide access equivalent to --allow-all.
Users who grant read and write access to the entire filesystem may not realize that these access to these files may have additional, unintended consequences. The documentation did not reflect that this practice should be undertaken to increase the strength of the security sandbox.
Impact
Users who run code with --allow-read or --allow-write may unexpectedly end up granting additional permissions via file-system operations.
Patches
Deno 1.43 and above require explicit --allow-all access to read or write /etc, /dev on unix platform (as well as /proc and /sys on linux platforms), and any path starting with \\ on Windows.
Workarounds
The security sandbox in previous versions of Deno allows for denial of access to these files, but it requires an explicit addition of deny flags: --deny-read=/dev --deny-read=/sys --deny-read=/proc --deny-read=/etc --deny-write=/dev --deny-write=/sys --deny-write=/proc --deny-write=/etc. Note that symlinks in allowed locations may defeat this protection in earlier versions of Deno.
Reporters
This vulnerability was reported by a number of analysts. Thanks to [email protected], [email protected], @leesh3288, and @cristianstaicu for their reports and analysis.
Permalink: https://github.com/advisories/GHSA-23rx-c3g5-hv9wJSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0yM3J4LWMzZzUtaHY5d84AA73I
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 7 months ago
Updated: 7 months ago
CVSS Score: 8.5
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Identifiers: GHSA-23rx-c3g5-hv9w, CVE-2024-34346
References:
- https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w
- https://nvd.nist.gov/vuln/detail/CVE-2024-34346
- https://github.com/advisories/GHSA-23rx-c3g5-hv9w
Blast Radius: 0.0
Affected Packages
cargo:deno
Dependent packages: 5Dependent repositories: 1
Downloads: 320,837 total
Affected Version Ranges: < 1.43.1
Fixed in: 1.43.1
All affected versions: 0.0.1, 0.3.5, 0.3.6, 0.3.7, 0.3.8, 0.3.9, 0.3.10, 0.3.11, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.14.0, 0.15.0, 0.16.0, 0.17.0, 0.18.0, 0.19.0, 0.20.0, 0.21.0, 0.22.0, 0.23.0, 0.29.0, 0.30.0, 0.30.1, 0.31.0, 0.32.0, 0.33.0, 0.34.0, 0.35.0, 0.36.0, 0.37.0, 0.37.1, 0.38.0, 0.40.0, 0.41.0, 0.42.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.3.0, 1.3.1, 1.3.3, 1.4.0, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.7.0, 1.7.1, 1.7.2, 1.7.5, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.9.0, 1.9.1, 1.9.2, 1.10.0, 1.10.1, 1.10.2, 1.10.3, 1.11.0, 1.11.1, 1.11.2, 1.11.4, 1.11.5, 1.12.0, 1.12.1, 1.12.2, 1.13.0, 1.13.1, 1.13.2, 1.14.0, 1.14.1, 1.14.2, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.18.0, 1.18.1, 1.18.2, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21.0, 1.21.1, 1.21.2, 1.21.3, 1.22.0, 1.22.1, 1.22.2, 1.22.3, 1.23.0, 1.23.1, 1.23.2, 1.23.3, 1.23.4, 1.24.0, 1.24.1, 1.24.2, 1.24.3, 1.25.0, 1.25.1, 1.25.2, 1.25.3, 1.25.4, 1.26.0, 1.26.1, 1.26.2, 1.27.0, 1.27.1, 1.27.2, 1.28.0, 1.28.1, 1.28.2, 1.28.3, 1.29.0, 1.29.1, 1.29.2, 1.29.3, 1.29.4, 1.30.0, 1.30.1, 1.30.2, 1.30.3, 1.31.0, 1.31.1, 1.31.2, 1.31.3, 1.32.0, 1.32.1, 1.32.2, 1.32.3, 1.32.4, 1.32.5, 1.33.0, 1.33.1, 1.33.2, 1.33.3, 1.33.4, 1.34.0, 1.34.1, 1.34.2, 1.34.3, 1.35.0, 1.35.1, 1.35.2, 1.35.3, 1.36.0, 1.36.1, 1.36.2, 1.36.3, 1.36.4, 1.37.0, 1.37.1, 1.37.2, 1.38.0, 1.38.1, 1.38.2, 1.38.3, 1.38.4, 1.38.5, 1.39.0, 1.39.1, 1.39.2, 1.39.3, 1.39.4, 1.40.0, 1.40.1, 1.40.2, 1.40.3, 1.40.4, 1.40.5, 1.41.0, 1.41.1, 1.41.2, 1.41.3, 1.42.0, 1.42.1, 1.42.2, 1.42.3, 1.42.4, 1.43.0
All unaffected versions: 1.43.1, 1.43.2, 1.43.3, 1.43.4, 1.43.5, 1.43.6, 1.44.0, 1.44.1, 1.44.2, 1.44.3, 1.44.4, 1.45.0, 1.45.1, 1.45.2, 1.45.3, 1.45.4, 1.45.5, 1.46.0, 1.46.1, 1.46.2, 1.46.3, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.1.0