Vulnerability · Published Mar 17, 2023 · Assigned by GitHub_M

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

Medium 5.7

In plain English

A medium-severity server-side request forgery in discourse from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 3.1)5.7Medium

Exploit odds (30 days)0.6%top 53.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the `beta` and `tests-passed` branches, attackers are able to bypass Discourse's server-side request forgery (SSRF) protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the latest beta and tests-passed version of Discourse. version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	beta < 3.1.0.beta3tests-passed < 3.1.0.beta3

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

References

https://github.com/discourse/discourse/security/advisories/GHSA-26h3-8ww8-v5fc x_refsource_CONFIRM
https://github.com/discourse/discourse/pull/20710 x_refsource_MISC
https://github.com/discourse/discourse/commit/fd16eade7fcc6bba4b71e71106a2eb13cdfdae4a x_refsource_MISC