Red Hat Single Sign-On 7.6.5 security update on RHEL 8
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-46877 CVE-2023-1436 CVE-2023-3223 |
| CWE-ID | CWE-502 CWE-674 CWE-400 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
rh-sso7-keycloak (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Deserialization of Untrusted Data
EUVDB-ID: #VU59148
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-46877
CWE-ID:
CWE-502 - Deserialization of Untrusted Data
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insecure input validation when processing serialized JsonNode values. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Note, the vulnerability affects JDK serialization only.
Install updates from vendor's website.
rh-sso7-keycloak (Red Hat package): before 18.0.9-1.redhat_00001.1.el8sso
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4919
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) Uncontrolled Recursion
EUVDB-ID: #VU75431
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-1436
CWE-ID:
CWE-674 - Uncontrolled Recursion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to uncontrolled recursion when constructing a JSONArray from a Collection that contains a self-reference in one of its elements. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Install updates from vendor's website.
rh-sso7-keycloak (Red Hat package): before 18.0.9-1.redhat_00001.1.el8sso
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4919
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.
3) Resource exhaustion
EUVDB-ID: #VU79114
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-3223
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources by servlets annotated with @MultipartConfig. A remote attacker can send a large multipart content to the server, consume all available memory resources and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
rh-sso7-keycloak (Red Hat package): before 18.0.9-1.redhat_00001.1.el8sso
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4919
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.
