CVE-2011-4885

60Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendepss 83%

from disclosure to weapon0 days

Published on NVDDec 30

1st PoCJul 15

metasploitDec 28

exploitation probability

83%top 1% of all CVEs

observed exploitation

nono source reports it

5 public exploit(s)

What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Red HatVEX document ↗

Fixed

13 products (1,551 components)

RHEL Desktop Workstation (v. 5 client) · Red Hat Enterprise Linux (v. 5 server) · Red Hat Enterprise Linux Desktop Optional (v. 6) · Red Hat Enterprise Linux HPC Node (v. 6) · Red Hat Enterprise Linux HPC Node Optional (v. 6) · and others 8

fix ↗

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✓ VexDay Proof

exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/18305 exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/2012 exploitdbwww.exploit-db.com/exploits/18296unverified cve_referencewww.exploit-db.com/exploits/18305unverified 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