OpenSUSE Linux update for qemu



Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-14364
CVE-2020-15863
CVE-2020-16092
CVE-2020-24352
CWE-ID CWE-787
CWE-121
CWE-617
Exploitation vector Local network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Opensuse
Operating systems & Components / Operating system

Vendor SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU45985

Risk: Medium

CVSSv4.0: 7.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

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 packages.

Vulnerable software versions

Opensuse: 15.2

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html


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.

2) Stack-based buffer overflow

EUVDB-ID: #VU31799

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-15863

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system with elevated privileges.

The vulnerability exists due to a boundary error when processing packets in xgmac_enet_send() in hw/net/xgmac.c. A local user on the guest operating system can send a specially crafted request to the application, trigger stack-based buffer overflow and execute arbitrary code on the target system with elevated privileges.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.2

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html


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) Reachable Assertion

EUVDB-ID: #VU44163

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-16092

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion when processing certain network packets on "e1000e" and "vmxnet3" devices in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c. A remote attacker on a guest operating system can send a specially crafted packet that will result in hypervisor crash.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.2

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html


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) Out-of-bounds write

EUVDB-ID: #VU47531

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24352

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the ATI VGA device implementation of the QEMU emulator incide of the ati_2d_blt() routine while handling MMIO write operations through the ati_mm_write() callback. A local privileged user on a guest operating system can run a specially crafted program to trigger out-of-bounds write and crash the QEMU process.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.2

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html


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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