- ------------------------------------------------------------------------- Debian LTS Advisory DLA-2773-1 [email protected] https://www.debian.org/lts/security/ Thorsten Alteholz September 30, 2021 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : curl Version : 7.52.1-5+deb9u16 CVE ID : CVE-2021-22946 CVE-2021-22947 Two issues have been found in curl, a command line tool and an easy-to-use client-side library for transferring data with URL syntax. CVE-2021-22946 Crafted answers from a server might force clients to not use TLS on connections though TLS was required and expected. CVE-2021-22947 When using STARTTLS to initiate a TLS connection, the server might send multiple answers before the TLS upgrade and such the client would handle them as being trusted. This could be used by a MITM-attacker to inject fake response data. For Debian 9 stretch, these problems have been fixed in version 7.52.1-5+deb9u16. We recommend that you upgrade your curl packages. For the detailed security status of curl please refer to its security tracker page at: https://security-tracker.debian.org/tracker/curl Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS