Vulnerability Details : CVE-2021-43999
Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.
Vulnerability category: BypassGain privilege
Products affected by CVE-2021-43999
- cpe:2.3:a:apache:guacamole:1.3.0:-:*:*:*:*:*:*
- cpe:2.3:a:apache:guacamole:1.2.0:-:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43999
1.75%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43999
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-43999
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by:
- nvd@nist.gov (Primary)
- security@apache.org (Secondary)
References for CVE-2021-43999
-
https://lists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9
[SECURITY] CVE-2021-43999: Apache Guacamole: Improper validation of SAML responses-Apache Mail ArchivesMailing List;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2022/01/11/7
oss-security - [SECURITY] CVE-2021-43999: Apache Guacamole: Improper validation of SAML responsesMailing List;Third Party Advisory
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