VulnerabilityModified
CVE-2021-43999
If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.
HIGH 8.8EPSS 1.78%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.78% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- apache/guacamole
- Source
- security@apache.org
References
- http://www.openwall.com/lists/oss-security/2022/01/11/7Mailing List, Third Party Advisory
- https://lists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/01/11/7Mailing List, Third Party Advisory
- https://lists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9Mailing List, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.