Red Hat Enterprise Linux Fast Datapath update for openvswitch



Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2020-10722
CVE-2020-10723
CVE-2020-10724
CVE-2020-10725
CVE-2020-10726
CWE-ID CWE-20
CWE-310
CWE-401
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 openvswitch2.12 (Red Hat package)
Operating systems & Components / Operating system package or component

openvswitch2.11 (Red Hat package)
Operating systems & Components / Operating system package or component

openvswitch (Red Hat package)
Operating systems & Components / Operating system package or component

openvswitch2.10 (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU27994

Risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10722

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in check log functionality. A remote attacker can pass specially crafted input to the application, trigger mmap offset and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

openvswitch2.12 (Red Hat package): 2.12.0-8.el7 - 2.12.0-22.el8

openvswitch2.11 (Red Hat package): 2.11.0-5.el7 - 2.11.0-48.el8

openvswitch (Red Hat package): 2.0.0-7.el7 - 2.9.0-125.el7

openvswitch2.10 (Red Hat package): 2.10.0-5.el7 - 2.10.0-28.el7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2020:2295


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.

2) Input validation error

EUVDB-ID: #VU27996

Risk: Medium

CVSSv4.0: 4.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10723

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of translated addresses. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

openvswitch2.12 (Red Hat package): 2.12.0-8.el7 - 2.12.0-22.el8

openvswitch2.11 (Red Hat package): 2.11.0-5.el7 - 2.11.0-48.el8

openvswitch (Red Hat package): 2.0.0-7.el7 - 2.9.0-125.el7

openvswitch2.10 (Red Hat package): 2.10.0-5.el7 - 2.10.0-28.el7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2020:2295


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) Cryptographic issues

EUVDB-ID: #VU27997

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10724

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to incorrect validation of keys lengths. A remote attacker can bypass certain security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

openvswitch2.12 (Red Hat package): 2.12.0-8.el7 - 2.12.0-22.el8

openvswitch2.11 (Red Hat package): 2.11.0-5.el7 - 2.11.0-48.el8

openvswitch (Red Hat package): 2.0.0-7.el7 - 2.9.0-125.el7

openvswitch2.10 (Red Hat package): 2.10.0-5.el7 - 2.10.0-28.el7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2020:2295


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) Memory leak

EUVDB-ID: #VU27998

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-2020-10725

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

openvswitch2.12 (Red Hat package): 2.12.0-8.el7 - 2.12.0-22.el8

openvswitch2.11 (Red Hat package): 2.11.0-5.el7 - 2.11.0-48.el8

openvswitch (Red Hat package): 2.0.0-7.el7 - 2.9.0-125.el7

openvswitch2.10 (Red Hat package): 2.10.0-5.el7 - 2.10.0-28.el7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2020:2295


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) Memory leak

EUVDB-ID: #VU27999

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10726

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak, related to fd leak and vring index check. A remote attacker can force the application to leak memory and read sensitive information or perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

openvswitch2.12 (Red Hat package): 2.12.0-8.el7 - 2.12.0-22.el8

openvswitch2.11 (Red Hat package): 2.11.0-5.el7 - 2.11.0-48.el8

openvswitch (Red Hat package): 2.0.0-7.el7 - 2.9.0-125.el7

openvswitch2.10 (Red Hat package): 2.10.0-5.el7 - 2.10.0-28.el7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2020:2295


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.



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