# CVE-2017-1000420: Syncthing vulnerable to symlink traversal and arbitrary file overwrite

Source: https://junglewise.ai/threats/cve-2017-1000420-syncthing-vulnerable-to-symlink-traversal-and-arbitrary-file  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-14  
License: CC BY 4.0 with a link back

CVE-2017-1000420 · Severity: low · CVSS 3 · Published 2022-05-14

Syncthing vulnerable to symlink traversal and arbitrary file overwrite

Technologies: [github.com/syncthing/syncthing (Go)](https://junglewise.ai/threats/technologies/github-com-syncthing-syncthing). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2017-1000420 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2017-1000420 being exploited in the wild.

**How severe is CVE-2017-1000420?** Low severity, with a CVSS score of 3, published 14 May 2022.

**Which products and versions are affected?** github.com/syncthing/syncthing (Go) SEMVER:introduced=0,last_affected=0.14.33.

**Is there a fix for CVE-2017-1000420?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2017-1000420?** Check whether you run github.com/syncthing/syncthing (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- github.com/syncthing/syncthing (Go) SEMVER:introduced=0,last_affected=0.14.33

## Identifiers

- CVE-2017-1000420
- GHSA-28xp-g7f6-7mhf

## Related threats

- [GO-2022-0888 - Crash due to malformed relay protocol message in github.com/syncthing/syncthing](https://junglewise.ai/threats/cve-2021-21404-crash-due-to-malformed-relay-protocol-message)
- [syncthing vulnerable to Cross-site Scripting (XSS) in Web GUI](https://junglewise.ai/threats/cve-2022-46165-syncthing-vulnerable-to-cross-site-scripting-xss-in-web-gui)