Multiple vulnerabilities in Keycloak
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-10770 CVE-2020-14302 |
| CWE-ID | CWE-918 CWE-294 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Keycloak Server applications / Directory software, identity management |
| Vendor | Keycloak |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU49114
Risk: Medium
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-10770
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: Yes
DescriptionThe disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input passed via the "OIDC" parameter. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsKeycloak: 0.6.0 - 12.0.0
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1846270
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Authentication Bypass by Capture-replay
EUVDB-ID: #VU49113
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14302
CWE-ID:
CWE-294 - Authentication Bypass by Capture-replay
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the way Keycloak hadles authentication via external identity providers. After successful authentication the user is redirected to a Keycloak endpoint that
accepts multiple invocations with the use of the same "state" parameter. A remote attacker can perform a replay attack and bypass authentication process.
Install updates from vendor's website.
Vulnerable software versionsKeycloak: 0.6.0 - 12.0.0
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1849584
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
