CVE-2020-26299

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Summary

CVECVE-2020-26299
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-10 18:15:00 UTC
Updated2021-02-19 17:27:00 UTC
Descriptionftp-srv is an open-source FTP server designed to be simple yet configurable. In ftp-srv before version 4.4.0 there is a path-traversal vulnerability. Clients of FTP servers utilizing ftp-srv hosted on Windows machines can escape the FTP user's defined root folder using the expected FTP commands, for example, CWD and UPDR. When windows separators exist within the path (`\`), `path.resolve` leaves the upper pointers intact and allows the user to move beyond the root folder defined for that user. We did not take that into account when creating the path resolve function. The issue is patched in version 4.4.0 (commit 457b859450a37cba10ff3c431eb4aa67771122e3).

Risk And Classification

Problem Types: CWE-22

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ftp-srv Project Ftp-srv All All All All
Application Ftp-srv Project Ftp-srv All All All All

References

ReferenceSourceLinkTags
Symlink Resolution · Discussion #225 · autovance/ftp-srv · GitHub MISC github.com Exploit, Third Party Advisory
ftp-srv - npm MISC www.npmjs.com Product, Third Party Advisory
fix(fs): check resolved path against root (#224) · autovance/ftp-srv@457b859 · GitHub MISC github.com Patch, Third Party Advisory
fix(fs): check resolved path against root by matt-forster · Pull Request #224 · autovance/ftp-srv · GitHub MISC github.com Patch, Third Party Advisory
File System Bounds Escape · Advisory · autovance/ftp-srv · GitHub CONFIRM github.com Exploit, Third Party Advisory
Windows: User can escape from root directory · Issue #167 · autovance/ftp-srv · GitHub MISC github.com Exploit, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 982951 Nodejs (npm) Security Update for ftp-srv (GHSA-pmw4-jgxx-pcq9)

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