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Sentry CORS misconfiguration

Moderate severity GitHub Reviewed Published Jul 6, 2023 in getsentry/sentry • Updated Nov 5, 2023

Package

pip sentry (pip)

Affected versions

>= 23.6.0, < 23.6.2

Patched versions

23.6.2

Description

Impact

The Sentry API incorrectly returns the access-control-allow-credentials: true HTTP header if the Origin request header ends with the system.base-hostname option of Sentry installation. This only affects installations that have system.base-hostname option explicitly set, as it is empty by default.

Impact is limited since recent versions of major browsers have cross-site cookie blocking enabled by default. However, this flaw could allow other multi-step attacks.

Patches

The patch has been released in Sentry 23.6.2.

Workarounds

For Sentry SaaS customers, no action is needed.

For self-hosted Sentry installations that have system.base-hostname explicitly set, it is recommended to upgrade the installation to 23.6.2 or higher. There are no known workarounds.

References

Credits

References

@mdtro mdtro published to getsentry/sentry Jul 6, 2023
Published to the GitHub Advisory Database Jul 6, 2023
Reviewed Jul 6, 2023
Published by the National Vulnerability Database Jul 6, 2023
Last updated Nov 5, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS score

0.096%
(42nd percentile)

Weaknesses

CVE ID

CVE-2023-36829

GHSA ID

GHSA-4xqm-4p72-87h6

Source code

Credits

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