5.7 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
6.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.2%
Reauthenticating with an existing session cookie would re-use that session id, even if for different user credentials.
In this case, the pre-existing session could be used to gain elevated access to an existing Graylog login session, provided the malicious user could successfully inject their session cookie into someone else’s browser.
The complexity of such an attack is high, because it requires presenting a spoofed login screen and injection of a session cookie into an existing browser, potentially through an XSS attack. No such attack has been discovered.
Graylog 5.1.11 and 5.2.4, and any versions of the 6.0 development branch contain patches to not re-use sessions under any circumstances, making this type of attack impossible.
Using short session expiration and explicit log outs of unused sessions can help limiting the attack vector. Unpatched this vulnerability exists, but is relatively hard to exploit.
A proxy could be leveraged to clear the authentication
cookie for the Graylog server URL for the /api/system/sessions
endpoint, as that is the only one vulnerable.
Analysis provided by Fabian Yamaguchi - Whirly Labs (Pty) Ltd
CPE | Name | Operator | Version |
---|---|---|---|
org.graylog2:graylog2-server | lt | 5.2.4 | |
org.graylog2:graylog2-server | ge | 4.3.0 | |
org.graylog2:graylog2-server | lt | 5.1.11 |
github.com/advisories/GHSA-3xf8-g8gr-g7rh
github.com/Graylog2/graylog2-server/commit/1596b749db86368ba476662f23a0f0c5ec2b5097
github.com/Graylog2/graylog2-server/commit/b93a66353f35a94a4e8f3f75ac4f5cdc5a2d4a6a
github.com/Graylog2/graylog2-server/security/advisories/GHSA-3xf8-g8gr-g7rh
nvd.nist.gov/vuln/detail/CVE-2024-24823
5.7 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
6.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
21.2%