CVE-2023-24030

high-risk

Published 2023-06-15

An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0 and 8.8.15. 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 if url sanitisation is bypassed in incoming requests. NOTE: this is similar, but not identical, to CVE-2021-34807.

Do I need to act?

0.12% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.1/10 Medium

NETWORK / LOW complexity

Affected Products (20)

Collaboration

Affected Vendors

Zimbra

References (4)

Release Notes https://wiki.zimbra.com/wiki/Security_Center

Vendor Advisory https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Release Notes https://wiki.zimbra.com/wiki/Security_Center

Vendor Advisory https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

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high-risk

Severity 23/34 · High

Exploitability 1/34 · Minimal

Exposure 27/34 · High