Improper input validation in PHP
CVE-2011-4885
PHP before 5.3.9 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.834 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.834 · newest: 0.834 · change: 0.000
Affected products
- PHP — versions 5.0.0, 5.0.1, 5.0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp (vendor-advisory)
- www.securitytracker.com/id (vdb-entry)
- secunia.com/advisories/47404 (third-party-advisory)
- marc.info/ (vendor-advisory)
- www.nruns.com/_downloads/advisory28122011.pdf
- exchange.xforce.ibmcloud.com/vulnerabilities/72021 (vdb-entry)
- www.exploit-db.com/exploits/18296 (exploit)
- www.debian.org/security/2012/dsa-2399 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html (vendor-advisory)
Frequently asked questions
- What is CVE-2011-4885?
- CVE-2011-4885 is a vulnerability in PHP, classified under Improper Input Validation. Published 2011-12-30.
- Is CVE-2011-4885 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.