Vulnerability Details : CVE-2021-42761
A condition for session fixation vulnerability [CWE-384] in the session management of FortiWeb versions 6.4 all versions, 6.3.0 through 6.3.16, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 through 6.0.7, 5.9.0 through 5.9.1 may allow a remote, unauthenticated attacker to infer the session identifier of other users and possibly usurp their session.
Products affected by CVE-2021-42761
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42761
0.33%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42761
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
9.0
|
CRITICAL | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
2.2
|
6.0
|
Fortinet, Inc. |
CWE ids for CVE-2021-42761
-
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-42761
-
https://fortiguard.com/psirt/FG-IR-21-214
PSIRT Advisories | FortiGuardVendor Advisory
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