CVE-2021-22897

 

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

Last modified: - 30-08-2022 11:21

Total changes: - 11

Description

curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single "static" variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly.

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://curl.se/docs/CVE-2021-22897.html
• https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511
• https://hackerone.com/reports/1172857
• N/A-Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210727-0007/
• 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

 

Keywords

NVD

 

CVE-2021-22897

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures