CVE-2021-41088

CVSS V2 High 9.3 CVSS V3 High 8.8
Description
Elvish is a programming language and interactive shell, combined into one package. In versions prior to 0.14.0 Elvish's web UI backend (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. All Elvish releases from 0.14.0 onward no longer include the the web UI, although it is still possible for the user to build a version from source that includes the web UI. 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).
Overview
  • CVE ID
  • CVE-2021-41088
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-23T20:15:07
  • Last Modified Date
  • 2022-08-12T17:48:58
Weakness Enumerations
CWE URL
CWE-346 http://cwe.mitre.org/data/definitions/346.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:elv:elvish:*:*:*:*:*:*:*:* 1 OR 0.14.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9.3
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/elves/elvish/security/advisories/GHSA-fpv6-f8jw-rc3r Third Party Advisory
https://github.com/elves/elvish/commit/ccc2750037bbbfafe9c1b7a78eadd3bd16e81fe5 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-41088
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41088
History
Created Old Value New Value Data Type Notes
2022-05-10 06:52:41 Added to TrackCVE
2022-12-05 11:15:07 2021-09-23T20:15Z 2021-09-23T20:15:07 CVE Published Date updated
2022-12-05 11:15:07 2022-08-12T17:48:58 CVE Modified Date updated
2022-12-05 11:15:07 Analyzed Vulnerability Status updated