CVE-2023-3494

The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copyin...

Buffer overflow

The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copyin...

CVE-2023-3494 bhyve privileged guest escape via fwctl

The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copyin...

CVE-2023-3494 bhyve privileged guest escape via fwctl

The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copyin...

CVE-2023-3494: Buffer Copy without Checking Size of Input

The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copyin...

Juniper Junos OS Vulnerability (JSA69496)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA69496 advisory. - In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient8 fails to handle...

FreeBSD : FreeBSD -- Missing bounds check in 9p message handling (8eaaf135-1893-11ed-9b22-002590c1f29c)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 8eaaf135-1893-11ed-9b22-002590c1f29c advisory. - The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when...

FreeBSD -- Missing bounds check in 9p message handling

Problem Description: The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. Impact: The bug can be...

PT-2023-12712 · Bhyve +1 · Bhyve +1

Name of the Vulnerable Software and Affected Versions: bhyve affected versions not specified Description: The e1000 network adapters allow modifications to Ethernet packets during transmission, including IP and TCP checksum insertion, Ethernet VLAN header insertion, and TCP segmentation offload...

FreeBSD -- Bhyve e82545 device emulation out-of-bounds write

Problem Description: The e1000 network adapters permit a variety of modifications to an Ethernet packet when it is being transmitted. These include the insertion of IP and TCP checksums, insertion of an Ethernet VLAN header, and TCP segmentation offload "TSO". The e1000 device model uses an...

CVE-2020-7461

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient8 fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle ...

CVE-2020-7461

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient8 fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle ...

Heap overflow

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient8 fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle ...

FreeBSD : FreeBSD -- Multiple vulnerabilities in rtsold (e2748c9d-3483-11eb-b87a-901b0ef719ab)

Two bugs exist in rtsold8's RDNSS and DNSSL option handling. First, rtsold8 failed to perform sufficient bounds checking on the extent of the option. In particular, it does not verify that the option does not extend past the end of the received packet before processing its contents. The kernel...

FreeBSD : grub2-bhyve -- multiple privilege escalations (9d6a48a7-4dad-11ea-8a1d-7085c25400ea)

Reno Robert reports : FreeBSD uses a two-process model for running a VM. For booting non-FreeBSD guests, a modified grub-emu is used grub-bhyve. Grub-bhyve executes command from guest grub.cfg file. This is a security problem because grub was never written to handle inputs from OS as untrusted. I...

FreeBSD-SA-14:22.namei

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-14:22.namei Security Advisory The FreeBSD Project Topic: memory leak in sandboxed namei lookup Category: core Module: kernel Announced: 2014-10-21 Credits: Mateus...

Researchers Release Capsicum, New Sandbox Framework

As applications have become more and more complex in recent years and Web browsers have evolved into operating systems unto themselves, the task of securing desktop environments has become increasingly difficult. And while there’s been quite a bit of innovation on Windows security, advances in Un...