CVE-2019-16993 — In phpBB before 3
In phpBB before 3.1.7-PL1, includes/acp/acp_bbcodes.php has improper verification of a CSRF token on the BBCode page in the Administration Control Panel. An actual CSRF attack is possible if an attacker also manages to retrieve the session id of a reauthenticated administrator pr
Published
2019-09-30T11:30:40.000Z
Last modified
2024-08-05T01:24:48.712Z
01What is this vulnerability?
In phpBB before 3.1.7-PL1, includes/acp/acp_bbcodes.php has improper verification of a CSRF token on the BBCode page in the Administration Control Panel. An actual CSRF attack is possible if an attacker also manages to retrieve the session id of a reauthenticated administrator prior to targeting them.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-09-30T11:30:40.000Z
- Last modified: 2024-08-05T01:24:48.712Z
09References
- www.phpbb.com — https://www.phpbb.com/community/viewtopic.php?t=2352606
- www.phpbb.com — https://www.phpbb.com/support/documents.php?mode=changelog&version=3#v317
- github.com — https://github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/09/msg00036.html
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/10/msg00006.html
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