CVE-2021-22897
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 3.0%
exploitation probability
3.0%top 13% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
n/a · https://github.com/curl/curlReferences
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfhttps://curl.se/docs/CVE-2021-22897.htmlhttps://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511https://hackerone.com/reports/1172857https://security.netapp.com/advisory/ntap-20210727-0007/https://www.oracle.com/security-alerts/cpuapr2022.htmlhttps://www.oracle.com/security-alerts/cpujan2022.htmlhttps://www.oracle.com//security-alerts/cpujul2021.html