Vulnerability in Apache HTTP Server
CVE-2009-2699
The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.142 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.142 · newest: 0.142 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.apache.org/dist/httpd/CHANGES_2.2.14 (Broken Link, Vendor Advisory)
- securitytracker.com/id (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/36596 (Patch, VDB Entry, Third Party Advisory, vdb-entry)
- exchange.xforce.ibmcloud.com/vulnerabilities/53666 (VDB Entry, Third Party Advisory, vdb-entry)
- issues.apache.org/bugzilla/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html (Third Party Advisory)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863b… (mailing-list, Patch, Mailing List)
- lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951… (mailing-list, Patch, Mailing List)
Frequently asked questions
- What is CVE-2009-2699?
- CVE-2009-2699 is a high-severity vulnerability in Apache HTTP Server, classified under Improper Locking. CVSS score: 7.5/10. Published 2009-10-13.
- How severe is CVE-2009-2699?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2009-2699 known to be exploited?
- 21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.