CVE-2015-1779

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.

Updated qemu packages fix security vulnerabilities:

A denial of service flaw was found in the way QEMU handled malformed Physical Region Descriptor Table (PRDT) data sent to the host's IDE and/or AHCI controller emulation. A privileged guest user could use this flaw to crash the system (rhbz#1204919).

It was found that the QEMU's websocket frame decoder processed incoming frames without limiting resources used to process the header and the payload. An attacker able to access a guest's VNC console could use this flaw to trigger a denial of service on the host by exhausting all available memory and CPU (CVE-2015-1779).

These are all security issues fixed in the xen-4.7.0_12-1.3 package on the GA media of openSUSE Tumbleweed.

kvm has been updated to fix issues in the embedded qemu:

* 

  CVE-2014-0223: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could potentially have
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

* 

  CVE-2014-3461: A user able to alter the savevm data (either on the
  disk or over the wire during migration) could have used this flaw to
  to corrupt QEMU process memory on the (destination) host, which could
  have potentially resulted in arbitrary code execution on the host
  with the privileges of the QEMU process.

* 

  CVE-2014-0222: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could have potentially
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

Non-security bugs fixed:

* Fix exceeding IRQ routes that could have caused freezes of guests.
  (bnc#876842)
* Fix CPUID emulation bugs that may have broken Windows guests with
  newer -cpu types (bnc#886535)

Security Issues:

* CVE-2014-0222
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0222>
* CVE-2014-0223
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0223>
* CVE-2014-3461
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3461>

kvm has been updated to fix issues in the embedded qemu:

* 

  CVE-2014-0223: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could potentially have
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

* 

  CVE-2014-3461: A user able to alter the savevm data (either on the
  disk or over the wire during migration) could have used this flaw to
  to corrupt QEMU process memory on the (destination) host, which could
  have potentially resulted in arbitrary code execution on the host
  with the privileges of the QEMU process.

* 

  CVE-2014-0222: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could have potentially
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

Non-security bugs fixed:

* Fix exceeding IRQ routes that could have caused freezes of guests.
  (bnc#876842)
* Fix CPUID emulation bugs that may have broken Windows guests with
  newer -cpu types (bnc#886535)

Security Issues:

* CVE-2014-0222
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0222>
* CVE-2014-0223
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0223>
* CVE-2014-3461
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3461>

qemu / kvm was updated to fix a security issue and some bugs.

Security issue fixed:

• CVE-2015-3456: Fixed a buffer overflow in the floppy drive emulation, which could be used to denial of service attacks or potential code execution against the host.

• CVE-2015-1779: Fixed insufficient resource limiting in the VNC websockets decoder.

Bugs fixed:

• qemu truncates vhd images in virt-rescue (bsc#886378)

• Update kvm-supported.txt with the current rbd support status.

• enable rbd build on x86_64 (qemu-block-rbd package) (FATE#318349)

kvm has been updated to fix issues in the embedded qemu:

* 

  CVE-2014-0223: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could potentially have
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

* 

  CVE-2014-3461: A user able to alter the savevm data (either on the
  disk or over the wire during migration) could have used this flaw to
  to corrupt QEMU process memory on the (destination) host, which could
  have potentially resulted in arbitrary code execution on the host
  with the privileges of the QEMU process.

* 

  CVE-2014-0222: An integer overflow flaw was found in the QEMU block
  driver for QCOW version 1 disk images. A user able to alter the QEMU
  disk image files loaded by a guest could have used this flaw to
  corrupt QEMU process memory on the host, which could have potentially
  resulted in arbitrary code execution on the host with the privileges
  of the QEMU process.

Non-security bugs fixed:

* Fix exceeding IRQ routes that could have caused freezes of guests.
  (bnc#876842)
* Fix CPUID emulation bugs that may have broken Windows guests with
  newer -cpu types (bnc#886535)

Security Issues:

* CVE-2014-0222
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0222>
* CVE-2014-0223
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0223>
* CVE-2014-3461
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3461>

xen was updated to fix 44 security issues.

These security issues were fixed:

• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#928393).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#924018).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet (bsc#957162).
• CVE-2015-7549: pci: NULL pointer dereference issue (bsc#958917).
• CVE-2015-8345: eepro100: infinite loop in processing command block list (bsc#956829).
• CVE-2015-8504: VNC: floating point exception (bsc#958491).
• CVE-2015-8550: Paravirtualized drivers were incautious about shared memory contents (XSA-155) (bsc#957988).
• CVE-2015-8554: qemu-dm buffer overrun in MSI-X handling (XSA-164) (bsc#958007).
• CVE-2015-8555: Information leak in legacy x86 FPU/XMM initialization (XSA-165) (bsc#958009).
• CVE-2015-8558: Infinite loop in…

xen was updated to fix 47 security issues.

These security issues were fixed:

• CVE-2013-4527: Buffer overflow in hw/timer/hpet.c might have allowed remote attackers to execute arbitrary code via vectors related to the number of timers (bnc#864673).
• CVE-2013-4529: Buffer overflow in hw/pci/pcie_aer.c allowed remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image (bnc#864678).
• CVE-2013-4530: Buffer overflow in hw/ssi/pl022.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image (bnc#864682).
• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#864655).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#864811).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#864391).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#864769).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#864805).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#877642).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#897654).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#901508).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#902737).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#928393).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#924018).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#945989).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#945404).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute…

xen was updated to fix 46 security issues.

These security issues were fixed:

• CVE-2013-4527: Buffer overflow in hw/timer/hpet.c might have allowed remote attackers to execute arbitrary code via vectors related to the number of timers (bsc#964746).
• CVE-2013-4529: Buffer overflow in hw/pci/pcie_aer.c allowed remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image (bsc#964929).
• CVE-2013-4530: Buffer overflow in hw/ssi/pl022.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a savevm image (bsc#964950).
• CVE-2013-4533: Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted s->rx_level value in a savevm image (bsc#964644).
• CVE-2013-4534: Buffer overflow in hw/intc/openpic.c allowed remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements (bsc#964452).
• CVE-2013-4537: The ssi_sd_transfer function in hw/sd/ssi-sd.c allowed remote attackers to execute arbitrary code via a crafted arglen value in a savevm image (bsc#962642).
• CVE-2013-4538: Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c allowed remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via crafted (1) cmd_len, (2) row, or (3) col values; (4) row_start and row_end values; or (5) col_star and col_end values in a savevm image (bsc#962335).
• CVE-2013-4539: Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c might have allowed remote attackers to execute arbitrary code via a crafted (1) precision, (2) nextprecision, (3) function, or (4) nextfunction value in a savevm image (bsc#962758).
• CVE-2014-0222: Integer overflow in the qcow_open function in block/qcow.c allowed remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image (bsc#964925).
• CVE-2014-3640: The sosendto function in slirp/udp.c allowed local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket (bsc#965112).
• CVE-2014-3689: The vmware-vga driver (hw/display/vmware_vga.c) allowed local guest users to write to qemu memory locations and gain privileges via unspecified parameters related to rectangle handling (bsc#962611).
• CVE-2014-7815: The set_pixel_format function in ui/vnc.c allowed remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value (bsc#962627).
• CVE-2014-9718: The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality had multiple interpretations of a function's return value, which allowed guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions (bsc#964431).
• CVE-2015-1779: The VNC websocket frame decoder allowed remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section (bsc#962632).
• CVE-2015-5278: Infinite loop in ne2000_receive() function (bsc#964947).
• CVE-2015-6855: hw/ide/core.c did not properly restrict the commands accepted by an ATAPI device, which allowed guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash (bsc#965156).
• CVE-2015-7512: Buffer overflow in the pcnet_receive function in hw/net/pcnet.c, when a guest NIC has a larger MTU, allowed remote attackers to cause a denial of service (guest OS crash) or execute…

This update for kvm fixes the following issues:

• Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)
• Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
• Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
• Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
• Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
• Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
• Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
• Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)
• Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
• Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
• Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
• Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
• Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
• Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)

This update for kvm fixes the following issues:

• Fix OOB read and write due to integer overflow in sm501_2d_operation() in hw/display/sm501.c (CVE-2020-12829, bsc#1172385)
• Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)
• Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)
• Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)
• Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)
• Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)
• Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)
• Fix DoS in e1000 emulated device (CVE-2021-20257 bsc#1182577)
• Fix OOB access in SLIRP ARP packet processing (CVE-2020-29130, bsc#1179467)
• Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)
• Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)
• Fix package scripts to not use hard coded paths for temporary working directories and log files (bsc#1182425)
• Fix use-after-free in slirp (CVE-2019-15890 bsc#1149811)
• Fix for similar problems as for the original fix prompting this issue (CVE-2019-6778 bsc#1123156)
• Fix potential OOB accesses in slirp (CVE-2020-8608 bsc#1163018 CVE-2020-7039 bsc#1161066)
• Fix use after free in slirp (CVE-2020-1983 bsc#1170940)
• Fix potential DOS in lsi scsi controller emulation (CVE-2019-12068 bsc#1146873)
• Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)
• Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)

Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3456)

Daniel P. Berrange discovered that QEMU incorrectly handled VNC websockets. A remote attacker could use this issue to cause QEMU to consume memory, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-1779)

Jan Beulich discovered that QEMU, when used with Xen, didn't properly restrict access to PCI command registers. A malicious guest could use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-2756)