Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses
CVE-2023-28111

5.7MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
17 March 2023

What is CVE-2023-28111?

The Discourse platform contains a server-side request forgery (SSRF) vulnerability that allows attackers to bypass security restrictions for private IPv4 addresses by using IPv4-mapped IPv6 addresses. This vulnerability affects versions prior to 3.1.0.beta3 on the beta and tests-passed branches. Users are encouraged to upgrade to the patched versions immediately to safeguard their systems against potential exploitation. As of now, there are no known workarounds for this issue.

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Deploy the Patch

Affected Version(s)

discourse beta < 3.1.0.beta3 < beta 3.1.0.beta3

discourse tests-passed < 3.1.0.beta3 < tests-passed 3.1.0.beta3

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://github.com/discourse/discourse/pull/20710
x_refsource_MISC
https://github.com/discourse/discourse/commit/fd16eade7fc...
x_refsource_MISC

CVSS V3.1

Score:
5.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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