Remote Yes

Type Arbitrary code execution

Description

A use-after-free security issue has been found in the MQTT sending component of curl before 7.79.0. When sending data to an MQTT server, libcurl could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again.

AVG-2389 lib32-libcurl-gnutls 7.78.0-1 7.79.0-1 High Testing

AVG-2388 libcurl-gnutls 7.78.0-1 7.79.0-1 High Testing

AVG-2387 lib32-libcurl-compat 7.78.0-1 7.79.0-1 High Testing

AVG-2386 libcurl-compat 7.78.0-1 7.79.0-1 High Testing

AVG-2385 lib32-curl 7.78.0-1 7.79.0-1 High Testing

AVG-2384 curl 7.78.0-1 7.79.0-1 High Testing

https://curl.se/docs/CVE-2021-22945.html
https://github.com/curl/curl/commit/43157490a5054bd