Red Hat update for qemu-kvm-rhev

1) Improper input validation

EUVDB-ID: #VU16553

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15746

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The vulnerability exists in qemu-seccomp.c due to an error when processing malicious input. An adjacent attacker can leverage mishandling of the seccomp policy for threads other than the main thread and cause the service to crash.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Integer overflow

EUVDB-ID: #VU16554

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-17958

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The vulnerability exists due to a boundary error in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used. An adjacent attacker can trigger integer overflow and cause the service to crash.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Buffer overflow

EUVDB-ID: #VU15997

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-17963

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to buffer overflow when qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX. A remote attacker can supply specially crafted packets over the network, trigger memory corruption and crash the Qemu process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Buffer overflow

EUVDB-ID: #VU18274

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6501

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service attack.

The vulnerability exists due to a boundary error within the scsi_handle_inquiry_reply in hw/scsi/scsi-generic.c. A local user can create a specially crafted application, trigger buffer overflow and crash the affected emulator.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Heap-based buffer overflow

EUVDB-ID: #VU18302

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6778

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the tcp_emu() function in slirp/tcp_subr.c. A local user can send specially crafted networking packets, trigger heap-based buffer overflow and crash the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Memory leak

EUVDB-ID: #VU18303

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9824

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information on the system.

The vulnerability exists due memory leak within the SLiRP networking implementation. A local user can read uninitialised stack memory contents.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 10.0 - 13.0

External links

http://access.redhat.com/errata/RHSA-2019:2425

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.