Ubuntu update for qemu



Published: 2021-02-02
Risk Medium
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2020-13253
CVE-2020-13361
CVE-2020-13362
CVE-2020-13659
CVE-2020-13754
CVE-2020-14364
CWE-ID CWE-125
CWE-787
CWE-476
Exploitation vector Network
Public exploit Public exploit code for vulnerability #6 is available.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

qemu-system-mips (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-ppc (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-x86 (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-aarch64 (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-arm (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-misc (Ubuntu package)
Operating systems & Components / Operating system package or component

qemu-system-sparc (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU28283

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13253

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in the SD Memory Card emulator while performing block write commands via sdhci_write() in QEMU. A remote user of guest operating system can trigger out-of-bounds read error and crash the QEMU process. 

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Out-of-bounds write

EUVDB-ID: #VU31801

Risk: Medium

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13361

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing frame count in es1370_transfer_audio in hw/audio/es1370.c. A local user on the guest operating system can send a specially crafted request and execute arbitrary code on the host operating system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Out-of-bounds read

EUVDB-ID: #VU31802

Risk: Low

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

CVE-ID: CVE-2020-13362

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in megasas_lookup_frame in hw/scsi/megasas.c. A local user on the guest operating system can pass specially crafted message with reply_queue_head field, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

4) NULL pointer dereference

EUVDB-ID: #VU31804

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13659

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in exec.c, related to BounceBuffer. A local user on the guest operating system can perform a denial of service (DoS) attack against the host system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

5) Out-of-bounds write

EUVDB-ID: #VU31803

Risk: Medium

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13754

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in hw/pci/msix.c. A local user on the guest operating system can send specially crafted address in an msi-x mmio operation, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

6) Out-of-bounds write

EUVDB-ID: #VU45985

Risk: Medium

CVSSv3.1: 8.1 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-14364

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: Yes

Description

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to a boundary error within the USB emulator in QEMU. A remote user with access to guest operating system on the guest operating system can send specially crafted USB packets, trigger out-of-bounds write and execute arbitrary code on the host system.

Mitigation

Update the affected package qemu to the latest version.

Vulnerable software versions

Ubuntu: 14.04

qemu-system-mips (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-ppc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-x86 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-aarch64 (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-arm (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-misc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

qemu-system-sparc (Ubuntu package): before 2.0.0+dfsg-2ubuntu1.47+esm1

External links

http://ubuntu.com/security/notices/USN-4467-2


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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