CVE-2022-39265
The _Mail Settings_ → Additional Parameters for PHP's mail() function mail_parameters setting value, in connection with the configured mail program's options and behavior, may allow access to sensitive information and Remote Code Execution (RCE).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
MyBB is a free and open source forum software. The _Mail Settings_ → Additional Parameters for PHP's mail() function mail_parameters setting value, in connection with the configured mail program's options and behavior, may allow access to sensitive information and Remote Code Execution (RCE). The vulnerable module requires Admin CP access with the `_Can manage settings?_` permission and may depend on configured file permissions. MyBB 1.8.31 resolves this issue with the commit `0cd318136a`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.40% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74, CWE-77
- Affected
- mybb/mybb
- Source
- security-advisories@github.com
References
- https://github.com/mybb/mybb/blob/mybb_1830/install/resources/settings.xml#L2331-L2338Exploit, Third Party Advisory
- https://github.com/mybb/mybb/commit/0cd318136a10b029bb5c8a8f6dddf39d87519797Patch, Third Party Advisory
- https://github.com/mybb/mybb/security/advisories/GHSA-hxhm-rq9f-7xj7Third Party Advisory
- https://mybb.com/versions/1.8.31/Release Notes, Vendor Advisory
- https://github.com/mybb/mybb/blob/mybb_1830/install/resources/settings.xml#L2331-L2338Exploit, Third Party Advisory
- https://github.com/mybb/mybb/commit/0cd318136a10b029bb5c8a8f6dddf39d87519797Patch, Third Party Advisory
- https://github.com/mybb/mybb/security/advisories/GHSA-hxhm-rq9f-7xj7Third Party Advisory
- https://mybb.com/versions/1.8.31/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.