Vulnerability in Apache HTTP Server
CVE-2012-4557
The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.175 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.175 · newest: 0.175 · change: 0.000
Affected products
- Apache HTTP Server — versions 2.2.12, 2.2.13, 2.2.14
Weakness classification (CWE)
Public proof-of-concept exploits
References
- marc.info/ (vendor-advisory)
- www.debian.org/security/2012/dsa-2579 (vendor-advisory)
- svn.apache.org/viewvc (Exploit)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:18938 (signature, vdb-entry)
- httpd.apache.org/security/vulnerabilities_22.html (Patch, Vendor Advisory)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:19284 (signature, vdb-entry)
- lists.opensuse.org/opensuse-updates/2013-02/msg00012.html (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi
- lists.opensuse.org/opensuse-updates/2013-02/msg00009.html (vendor-advisory)
- lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863b… (mailing-list)
Frequently asked questions
- What is CVE-2012-4557?
- CVE-2012-4557 is a vulnerability in Apache HTTP Server, classified under CWE-399. Published 2012-11-30.
- Is CVE-2012-4557 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.