CVE-2019-13164

qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).
• CVE-2019-5008: Fix DoS (NULL pointer dereference) in sparc64 virtual machine possible through guest device driver (bsc#1133031).

Bug fixes and enhancements:

• Upstream tweaked SnowRidge-Server vcpu model to now be simply Snowridge (jsc#SLE-4883)
• Add SnowRidge-Server vcpu model (jsc#SLE-4883)
• Add in documentation about md-clear feature (bsc#1138534)
• Fix SEV issue where older machine type is not processed correctly (bsc#1144087)
• Fix case of a bad pointer in Xen PV usb support code (bsc#1128106)
• Further refine arch-capabilities handling to help with security and performance in Intel hosts (bsc#1134883, bsc#1135210) (fate#327764)
• Add support for one more security/performance related vcpu feature (bsc#1136778) (fate#327796)
• Ignore csske for expanding the cpu model (bsc#1136540)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

Bug fixes and enhancements:

• Add vcpu features needed for Cascadelake-Server, Icelake-Client and Icelake-Server, especially the foundational arch-capabilities to help with security and performance on Intel hosts (bsc#1134883) (fate#327764)
• Add support for one more security/performance related vcpu feature (bsc#1136778) (fate#327796)
• Disable file locking in the Xen PV disk backend to avoid locking issues with PV domUs during migration. The issues triggered by the locking can not be properly handled in libxl. The locking introduced in qemu-2.10 was removed again in qemu-4.0 (bsc#1079730, bsc#1098403, bsc#1111025).
• Ignore csske for expanding the cpu model (bsc#1136540)
• Fix vm migration is failing with input/output error when nfs server is disconnected (bsc#1119115)

This update was imported from the SUSE:SLE-15:Update update project.

These are all security issues fixed in the qemu-6.1.0-32.1 package on the GA media of openSUSE Tumbleweed.

This update for kvm fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).
• CVE-2019-5008: Fix DoS (NULL pointer dereference) in sparc64 virtual machine possible through guest device driver (bsc#1133031).

Bug fixes and enhancements:

• Upstream tweaked SnowRidge-Server vcpu model to now be simply Snowridge (jsc#SLE-4883)
• Add SnowRidge-Server vcpu model (jsc#SLE-4883)
• Add in documentation about md-clear feature (bsc#1138534)
• Fix SEV issue where older machine type is not processed correctly (bsc#1144087)
• Fix case of a bad pointer in Xen PV usb support code (bsc#1128106)
• Further refine arch-capabilities handling to help with security and performance in Intel hosts (bsc#1134883, bsc#1135210) (fate#327764)
• Add support for one more security/performance related vcpu feature (bsc#1136778) (fate#327796)
• Ignore csske for expanding the cpu model (bsc#1136540)

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

Bug fixes and enhancements:

• Add vcpu features needed for Cascadelake-Server, Icelake-Client and Icelake-Server, especially the foundational arch-capabilities to help with security and performance on Intel hosts (bsc#1134883) (fate#327764)
• Add support for one more security/performance related vcpu feature (bsc#1136778) (fate#327796)
• Disable file locking in the Xen PV disk backend to avoid locking issues with PV domUs during migration. The issues triggered by the locking can not be properly handled in libxl. The locking introduced in qemu-2.10 was removed again in qemu-4.0 (bsc#1079730, bsc#1098403, bsc#1111025).
• Ignore csske for expanding the cpu model (bsc#1136540)
• Fix vm migration is failing with input/output error when nfs server is disconnected (bsc#1119115)

This update for qemu fixes the following issues:

Security issues fixed:

• CVE-2019-14378: Security fix for heap overflow in ip_reass on big packet input (bsc#1143794).
• CVE-2019-12155: Security fix for null pointer dereference while releasing spice resources (bsc#1135902).
• CVE-2019-13164: Security fix for qemu-bridge-helper ACL can be bypassed when names are too long (bsc#1140402).

Bug fixes and enhancements:

• Add vcpu features needed for Cascadelake-Server, Icelake-Client and Icelake-Server, especially the foundational arch-capabilities to help with security and performance on Intel hosts (bsc#1134880) (fate#327764).
• Add support for one more security/performance related vcpu feature (bsc#1136777) (fate#327795).
• Disable file locking in the Xen PV disk backend to avoid locking issues with PV domUs during migration. The issues triggered by the locking can not be properly handled in libxl. The locking introduced in qemu-2.10 was removed again in qemu-4.0 (bsc#1079730, bsc#1098403, bsc#1111025).
• Ignore csske for expanding the cpu model (bsc#1136528).
• Provide qcow2 L2 caching improvements, which allows for better storage performance in certain configurations (bsc#1139926, ECO-130).
• Fixed virsh migrate-setspeed (bsc#1127077, bsc#1141043).

It was discovered that the LSI SCSI adapter emulator implementation in QEMU did not properly validate executed scripts. A local attacker could use this to cause a denial of service. (CVE-2019-12068)

Sergej Schumilo, Cornelius Aschermann and Simon Wörner discovered that the qxl paravirtual graphics driver implementation in QEMU contained a null pointer dereference. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-12155)

Riccardo Schirone discovered that the QEMU bridge helper did not properly validate network interface names. A local attacker could possibly use this to bypass ACL restrictions. (CVE-2019-13164)

It was discovered that a heap-based buffer overflow existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host. (CVE-2019-14378)

It was discovered that a use-after-free vulnerability existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-15890)

USN-4191-2 fixed a vulnerability in QEMU. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that the LSI SCSI adapter emulator implementation in QEMU did not properly validate executed scripts. A local attacker could use this to cause a denial of service. (CVE-2019-12068)

Sergej Schumilo, Cornelius Aschermann and Simon Wörner discovered that the qxl paravirtual graphics driver implementation in QEMU contained a null pointer dereference. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-12155)

Riccardo Schirone discovered that the QEMU bridge helper did not properly validate network interface names. A local attacker could possibly use this to bypass ACL restrictions. (CVE-2019-13164)

It was discovered that a heap-based buffer overflow existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host. (CVE-2019-14378)

It was discovered that a use-after-free vulnerability existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-15890)