Vulnerability in Ruby-Lang Ruby
CVE-2008-3656
Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value function in WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted HTTP request that is processed by a backtracking regular expression.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.8 (High). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.702 (99.4th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.702 · newest: 0.702 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 1.6.8, 1.8.0, 1.8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:9682 (signature, vdb-entry)
- secunia.com/advisories/31430 (third-party-advisory)
- secunia.com/advisories/31697 (third-party-advisory)
- usn.ubuntu.com/651-1/ (vendor-advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/44371 (vdb-entry)
- support.apple.com/kb/HT3549
- wiki.rpath.com/wiki/Advisories:rPSA-2008-0264
- www.debian.org/security/2008/dsa-1652 (vendor-advisory)
- www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html (vendor-advisory)
- secunia.com/advisories/35074 (third-party-advisory)
Frequently asked questions
- What is CVE-2008-3656?
- CVE-2008-3656 is a vulnerability in Ruby-Lang Ruby, classified under CWE-399. Published 2008-08-13.
- Is CVE-2008-3656 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.