Prototype Pollution in Phpbb
CVE-2018-19274
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.
Vulnerability class: Insecure Deserialization
EPSS: 0.052 (91.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Phpbb
- Debian Debian_linux — versions 8.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19274?
- CVE-2018-19274 is a high-severity vulnerability in Phpbb, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2018-11-17.
- How severe is CVE-2018-19274?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2018-19274 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.