Arch Linux alert ASA-202101-42 (libvirt)
| From: | Morten Linderud via arch-security <arch-security@lists.archlinux.org> | |
| To: | arch-security@archlinux.org | |
| Subject: | [ASA-202101-42] libvirt: arbitrary code execution | |
| Date: | Fri, 29 Jan 2021 17:41:06 +0100 | |
| Message-ID: | <20210129164106.jscziyvpuac4jfnr@anathema> | |
| Cc: | Morten Linderud <foxboron@archlinux.org> |
Arch Linux Security Advisory ASA-202101-42 ========================================== Severity: Critical Date : 2021-01-29 CVE-ID : CVE-2020-25637 Package : libvirt Type : arbitrary code execution Remote : No Link : https://security.archlinux.org/AVG-1240 Summary ======= The package libvirt before version 1:7.0.0-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 1:7.0.0-1. # pacman -Syu "libvirt>=1:7.0.0-1" The problem has been fixed upstream in version 7.0.0. Workaround ========== None. Description =========== A double free memory issue was found to occur in the libvirt API responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. Impact ====== A malicious user could query the API in a way that could result in a code execution flaw. References ========== https://www.openwall.com/lists/oss-security/2020/10/02/1 https://libvirt.org/git/?p=libvirt.git;a=commit;h=955029b... https://libvirt.org/git/?p=libvirt.git;a=commit;h=50864dc... https://libvirt.org/git/?p=libvirt.git;a=commit;h=e4116ea... https://libvirt.org/git/?p=libvirt.git;a=commit;h=a63b48c... https://security.archlinux.org/CVE-2020-25637