CSRF in phpBB
CVE-2019-16993
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- phpBB
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- www.phpbb.com/community/viewtopic.php (Vendor Advisory)
- www.phpbb.com/support/documents.php (Vendor Advisory)
- github.com/phpbb/phpbb/commit/18abef716ecf42a35416444f3f84f5459d573789 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/09/msg00036.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00006.html (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16993?
- CVE-2019-16993 is a high-severity vulnerability in phpBB, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2019-09-30.
- How severe is CVE-2019-16993?
- High severity. CVSS v3 base score is 8.8 out of 10.