CVE-2021-22925

 

Published at: - 05-08-2021 11:15

Last modified: - 25-01-2023 07:37

Total changes: - 22

Description

curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

 

Verification logic

 

Reference

• https://hackerone.com/reports/1223882
• FEDORA-2021-5d21b90a30-Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210902-0003/
• https://support.apple.com/kb/HT212804
• https://support.apple.com/kb/HT212805
• 20210921 APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6-Mailing List, Third Party Advisory
• 20210921 APPLE-SA-2021-09-20-8 Additional information for APPLE-SA-2021-09-13-4 Security Update 2021-005 Catalina-Mailing List, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2021.html
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
• GLSA-202212-01-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-22925

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures