.NET Core on Red Hat Enterprise Linux 7 update for rh-dotnet30-dotnet and rh-dotnet31-dotnet
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-0602 CVE-2020-0603 |
| CWE-ID | CWE-20 CWE-787 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
rh-dotnet31-dotnet (Red Hat package) Operating systems & Components / Operating system package or component rh-dotnet30-dotnet (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU24289
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-0602
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the ASP.NET Core improperly handles web requests. A remote attacker can send a specially crafted request and cause a denial of service condition on the ASP.NET Core web application.
MitigationInstall updates from vendor's website.
rh-dotnet31-dotnet (Red Hat package): before 3.1.101-4.el7
rh-dotnet30-dotnet (Red Hat package): before 3.0.102-3.el7
CPE2.3- cpe:2.3:a:red_hat:rh-dotnet31-dotnet_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:rh-dotnet30-dotnet_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2020:0134
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) Out-of-bounds write
EUVDB-ID: #VU24288
Risk: High
CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2020-0603
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the ASP.NET Core. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
rh-dotnet31-dotnet (Red Hat package): before 3.1.101-4.el7
rh-dotnet30-dotnet (Red Hat package): before 3.0.102-3.el7
CPE2.3- cpe:2.3:a:red_hat:rh-dotnet31-dotnet_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:rh-dotnet30-dotnet_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2020:0134
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. However, proof of concept for this vulnerability is available.
