Arch Linux Security Advisory ASA-202106-44 ========================================== Severity: High Date : 2021-06-16 CVE-ID : CVE-2021-33833 Package : connman Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-2055 Summary ======= The package connman before version 1.40-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 1.40-1. # pacman -Syu "connman>=1.40-1" The problem has been fixed upstream in version 1.40. Workaround ========== None. Description =========== A security issue has been found in the dnsproxy component of connman in releases 1.32 to 1.39. Unpacking of NAME and RDATA/RDLENGTH fields with TYPE A/AAAA in the uncompress function uses a memcpy with insufficient bounds checking, which can overflow a stack buffer. Impact ====== A remote attacker might be able to execute arbitrary code on the victim's host. References ========== https://www.openwall.com/lists/oss-security/2021/06/09/1 https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=eceb2e... https://security.archlinux.org/CVE-2021-33833