GitHub Advisoryadvisory · Go

GHSA-fpv6-f8jw-rc3r Elvish vulnerable to remote code execution via the web UI backend

HIGH Published 2021-09-23 Modified 2022-08-15 Official page ↗
Aliases
CVE-2021-41088
Ecosystem
Go
Packages
github.com/elves/elvish
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weaknesses
CWE-346, CWE-668
Reviewed
2021-09-23

Affected packages

• Go github.com/elves/elvish: < 0.14.0 → fixed in 0.14.0

Description

Impact Elvish's backend for the experimental web UI (started by `elvish -web`) hosts an endpoint that allows executing the code sent from the web UI. The backend does not check the origin of requests correctly. As a result, if the user has the web UI backend open and visits a compromised or malicious website, the website can send arbitrary code to the endpoint in localhost. Patches All Elvish releases since 0.14.0 no longer include the experimental web UI, although it is still possible for the user to build a version from source that includes it. The issue can be patched for previous versions by removing the web UI (found in web, pkg/web or pkg/prog/web, depending on the exact version). Workarounds Do not use the experimental web UI. For more information If you have any questions or comments about this advisory, please email [email protected].

Related

Alias · CVE (1)

  • CVE-2021-41088 Elvish is a programming language and interactive shell, combined into one package. vulnerability

Weakness · CWE (2)

  • CWE-346 Origin Validation Error weakness
  • CWE-668 Exposure of Resource to Wrong Sphere weakness

References