1) Input validation error

Risk: Medium

CVSSv3:
6.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-12662

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 when processing DNS responses. A remote attacker who controls a malicious DNS server can send a
specially crafted response and perform a denial of service (DoS) attack
against third-party DNS servers.

The attack is triggered by random subdomains in the NSDNAME in NS records.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

Red Hat Enterprise Linux EUS Compute Node:
7.7

Red Hat Enterprise Linux for x86_64 – Extended Update Support:
7.7

Red Hat Enterprise Linux Server – Update Services for SAP Solutions:
7.7

Red Hat Enterprise Linux Server (for IBM Power LE) – Update Services for SAP Solutions:
7.7

Red Hat Enterprise Linux Server – TUS:
7.7

Red Hat Enterprise Linux for Power, little endian – Extended Update Support:
7.7

Red Hat Enterprise Linux for Power, big endian – Extended Update Support:
7.7

Red Hat Enterprise Linux for IBM z Systems – Extended Update Support:
7.7

Red Hat Enterprise Linux Server – AUS:
7.7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:4181

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) Infinite loop

Risk: Medium

CVSSv3:
6.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-12663

CWE-ID:
CWE-835 – Loop with Unreachable Exit Condition (‘Infinite Loop’)

Exploit availability:
No

Description

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

The vulnerability exists due to infinite loop when parsing DNS responses. A remote attacker can send a specially crafted DNS response to the server, consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

Red Hat Enterprise Linux EUS Compute Node:
7.7

Red Hat Enterprise Linux for x86_64 – Extended Update Support:
7.7

Red Hat Enterprise Linux Server – Update Services for SAP Solutions:
7.7

Red Hat Enterprise Linux Server (for IBM Power LE) – Update Services for SAP Solutions:
7.7

Red Hat Enterprise Linux Server – TUS:
7.7

Red Hat Enterprise Linux for Power, little endian – Extended Update Support:
7.7

Red Hat Enterprise Linux for Power, big endian – Extended Update Support:
7.7

Red Hat Enterprise Linux for IBM z Systems – Extended Update Support:
7.7

Red Hat Enterprise Linux Server – AUS:
7.7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:4181

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.



Source link

Is your business effected by Cyber Crime?

If a cyber crime or cyber attack happens to you, you need to respond quickly. Cyber crime in its several formats such as online identity theft, financial fraud, stalking, bullying, hacking, e-mail fraud, email spoofing, invoice fraud, email scams, banking scam, CEO fraud. Cyber fraud can lead to major disruption and financial disasters. Contact Digitpol’s hotlines or respond to us online.

Digitpol’s Cyber Crime Investigation Unit provides investigative support to victims of cyber crimes. Digitpol is available 24/7. https://digitpol.com/cybercrime-investigation/

Europe +31558448040
UK +44 20 8089 9944
ASIA +85239733884