Arch Linux Security Advisory ASA-201908-14 ========================================== Severity: High Date : 2019-08-24 CVE-ID : CVE-2018-18751 Package : gettext Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-885 Summary ======= The package gettext before version 0.20.1-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 0.20.1-1. # pacman -Syu "gettext>=0.20.1-1" The problem has been fixed upstream in version 0.20.1. Workaround ========== None. Description =========== An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt. Impact ====== A local attacker is able to execute arbitrary code by using a specially crafted message. References ========== https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/hea... https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/dou... https://git.savannah.gnu.org/gitweb/?p=gettext.git;a=commitdiff;h=dce3a16 https://security.archlinux.org/CVE-2018-18751