Resource exhaustion in Apache HTTP Server
CVE-2011-0419
Stack consumption vulnerability in the fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against mod_autoindex in httpd.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.304 (98.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.304 · newest: 0.304 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Portable Runtime
- Apple Mac OS X — versions 10.6.0
- FreeBSD
- Google Android
- NetBSD — versions 5.1
- OpenBSD — versions 4.8
- Oracle Solaris — versions 10
- Debian Linux — versions 5.0, 6.0, 7.0
- SUSE Linux Enterprise Server — versions 10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/44574 (Not Applicable, Vendor Advisory, third-party-advisory)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- www.mail-archive.com/dev@apr.apache.org/msg23976.html (mailing-list, Mailing List, Third Party Advisory)
- secunia.com/advisories/48308 (Not Applicable, third-party-advisory)
- securityreason.com/achievement_securityalert/98 (Exploit, Third Party Advisory, third-party-advisory)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:14804 (signature, Third Party Advisory, vdb-entry)
- www.oracle.com/technetwork/topics/security/cpujuly2013-1899826.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2011-0419?
- CVE-2011-0419 is a vulnerability in Apache HTTP Server, classified under Allocation of Resources Without Limits or Throttling. Published 2011-05-16.
- Is CVE-2011-0419 known to be exploited?
- 26 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.