Red Hat update for qemu-kvm-ma



Published: 2019-08-08
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-17963
CVE-2019-6501
CWE-ID CWE-120
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) 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 Enterprise Linux for IBM z Systems: 7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:2166


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.

2) 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 Enterprise Linux for IBM z Systems: 7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:2166


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.



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