SynopsisThe remote Virtuozzo host is missing multiple security updates.
DescriptionAccording to the versions of the OVMF / anaconda / anaconda-core / anaconda-dracut / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :
- An integer overflow flaw was found in create_elf_tables(). An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system.
- It was discovered that a race condition between packet_do_bind() and packet_notifier() in the implementation of AF_PACKET could lead to use-after-free. An unprivileged user on the host or in a container could exploit this to crash the kernel or, potentially, to escalate their privileges in the system.
- The Linux kernel was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
Note that Tenable Network Security has extracted the preceding description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected OVMF / anaconda / anaconda-core / anaconda-dracut / etc packages.