CVE-2021-22898

 

Published at: - 11-06-2021 06:15

Last modified: - 30-08-2022 09:09

Total changes: - 19

Description

curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://hackerone.com/reports/1176461
• https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
• https://curl.se/docs/CVE-2021-22898.html
• [guacamole-issues] 20210618 [jira] [Created] (GUACAMOLE-1368) Latest docker image fails security scans.-Mailing List, Third Party Advisory
• N/A-Patch, Third Party Advisory
• [oss-security] 20210721 [SECURITY ADVISORY] curl: TELNET stack contents disclosure again-Mailing List, Patch, Third Party Advisory
• FEDORA-2021-83fdddca0f-Mailing List, Third Party Advisory
• FEDORA-2021-5d21b90a30-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210813 [SECURITY] [DLA 2734-1] curl security update-Mailing List, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• https://www.oracle.com/security-alerts/cpuapr2022.html
• DSA-5197-Third Party Advisory
• [debian-lts-announce] 20220828 [SECURITY] [DLA 3085-1] curl security update-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-22898

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures