Redhat Virtualization vulnerabilities

CVE-2016-5403 [MEDIUM] CWE-400 CVE-2016-5403: The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cau The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

CVE-2016-5126 [HIGH] CWE-787 CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local gue Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.

CVE-2016-4020 [MEDIUM] CVE-2016-4020: The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

CVE-2016-3710 [HIGH] CWE-119 CVE-2016-3710: The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which a The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue.

CVE-2016-1568 [HIGH] CWE-416 CVE-2016-1568: Use-after-free vulnerability in hw/ide/ahci.c in QEMU, when built with IDE AHCI Emulation support, a Use-after-free vulnerability in hw/ide/ahci.c in QEMU, when built with IDE AHCI Emulation support, allows guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via an invalid AHCI Native Command Queuing (NCQ) AIO command.

CVE-2016-2857 [HIGH] CWE-119 CVE-2016-2857: The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.

CVE-2015-1779 [HIGH] CWE-400 CVE-2015-1779: The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section.

CVE-2015-7512 [CRITICAL] CWE-120 CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larg Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

CVE-2015-3214 [MEDIUM] CWE-119 CVE-2015-3214: The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not dist The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.

CVE-2015-5165 [CRITICAL] CWE-908 CVE-2015-5165: The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors.

CVE-2015-3209 [HIGH] CWE-787 CVE-2015-3209: Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitr Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS set.

CVE-2015-0235 [CRITICAL] CWE-787 CVE-2015-0235: Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x ve Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-dependent attackers to execute arbitrary code via vectors related to the (1) gethostbyname or (2) gethostbyname2 function, aka "GHOST."

CVE-2014-7840 [HIGH] CWE-20 CVE-2014-7840: The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allo The host_from_stream_offset function in arch_init.c in QEMU, when loading RAM during migration, allows remote attackers to execute arbitrary code via a crafted (1) offset or (2) length value in savevm data.

CVE-2014-7815 [MEDIUM] CWE-20 CVE-2014-7815: The set_pixel_format function in ui/vnc.c in QEMU allows remote attackers to cause a denial of servi The set_pixel_format function in ui/vnc.c in QEMU allows remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value.

CVE-2014-3615 [LOW] CWE-200 CVE-2014-3615: The VGA emulator in QEMU allows local guest users to read host memory by setting the display to a hi The VGA emulator in QEMU allows local guest users to read host memory by setting the display to a high resolution.

CVE-2014-7169 [CRITICAL] CVE-2014-7169: GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definiti GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgi

CVE-2014-6271 [CRITICAL] CWE-78 CVE-2014-6271: GNU Bash through 4.3 processes trailing strings after function definitions in the values of environm GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts execute

CVE-2014-3468 [HIGH] CWE-131 CVE-2014-3468: The asn1_get_bit_der function in GNU Libtasn1 before 3.6 does not properly report an error when a ne The asn1_get_bit_der function in GNU Libtasn1 before 3.6 does not properly report an error when a negative bit length is identified, which allows context-dependent attackers to cause out-of-bounds access via crafted ASN.1 data.

CVE-2014-3469 [MEDIUM] CWE-476 CVE-2014-3469: The (1) asn1_read_value_type and (2) asn1_read_value functions in GNU Libtasn1 before 3.6 allows con The (1) asn1_read_value_type and (2) asn1_read_value functions in GNU Libtasn1 before 3.6 allows context-dependent attackers to cause a denial of service (NULL pointer dereference and crash) via a NULL value in an ivalue argument.

CVE-2014-3467 [MEDIUM] CVE-2014-3467: Multiple unspecified vulnerabilities in the DER decoder in GNU Libtasn1 before 3.6, as used in GnuTL Multiple unspecified vulnerabilities in the DER decoder in GNU Libtasn1 before 3.6, as used in GnuTLS, allow remote attackers to cause a denial of service (out-of-bounds read) via crafted ASN.1 data.