CVE-2020-25074High· 8.8▾ TwilightMoinMoin vulnerable to remote code execution via cache action
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 1.3 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
6.6%
The cache action in action/cache.py allows directory traversal through a crafted HTTP request. An attacker who can upload attachments to the wiki can use this to achieve remote code execution.
Users are strongly advised to upgrade to a patched version.
MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes.
It is not advised to work around this, but to upgrade MoinMoin to a patched version.
That said, a work around via disabling the cache or the AttachFile action might be possible.
Also, it is of course helpful if you give write permissions (which include uploading attachments) only to trusted users.
This vulnerability was discovered by Michael Chapman.
If you have any questions or comments about this advisory, email me at [email protected].
moin < 1.9.11Upgrade to a patched release:
moin 1.9.11Connected by shared product, vendor, weakness, or advisory.
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