Vulnerability Details : CVE-2021-34807
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).
Vulnerability category: Open redirect
Products affected by CVE-2021-34807
- cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p13:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p14:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p15:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p16:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p2:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p3:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p4:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p5:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p6:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p7:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p8:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p9:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p17:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p18:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p19:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p20:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p21:*:*:*:*:*:*
- cpe:2.3:a:zimbra:collaboration:8.8.15:p22:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34807
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34807
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-34807
-
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-34807
-
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
Zimbra Releases/9.0.0/P16 - Zimbra :: Tech CenterRelease Notes;Vendor Advisory
-
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Zimbra Security Advisories - Zimbra :: Tech CenterVendor Advisory
-
https://wiki.zimbra.com/wiki/Security_Center
Security Center - Zimbra :: Tech CenterRelease Notes;Vendor Advisory
-
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
Zimbra Releases/8.8.15/P23 - Zimbra :: Tech CenterRelease Notes;Vendor Advisory
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