CVE-2011-4885

EPSS 83.9%

Vexday Risk Score

60Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Functional exploit

Automatable exploit available (Nuclei/Metasploit).

CVSS —EPSS 83.9%KEV nãoPoC públicaNuclei —Metasploit simPatch referenciado

Lifecycle

15 Jul 2006Public PoC

28 Dec 2011Metasploit module available

30 Dec 2011Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

Affected products

n/a · n/a

public PoCs found — 5

cve_referencewww.exploit-db.com/exploits/18305unverified exploitdbwww.exploit-db.com/exploits/18296unverified exploitdbwww.exploit-db.com/exploits/18305unverified exploitdbwww.exploit-db.com/exploits/2012unverified cve_referencewww.exploit-db.com/exploits/18296unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041 http://lists.apple.com/archives/security-announce/2012/May/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html http://marc.info/?l=bugtraq&m=132871655717248&w=2 http://marc.info/?l=bugtraq&m=133469208622507&w=2 http://rhn.redhat.com/errata/RHSA-2012-0071.html http://secunia.com/advisories/47404 http://secunia.com/advisories/48668 https://exchange.xforce.ibmcloud.com/vulnerabilities/72021 https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py