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CVE-2007-3847

22
FAUCET Score

CVE-2007-3847 describes a denial-of-service vulnerability in Apache 2.3.0's mod_proxy, specifically affecting threaded MPMs, where remote origin servers can crash a caching forward proxy process via crafted date headers. This issue, a buffer over-read (CWE-125), has a CVSS score of 5.0, indicating a medium severity with network access, low attack complexity, and potential for partial availability impact. While its EPSS score is low, suggesting limited exploitability in the wild, there is no known public exploit code, Metasploit modules, or significant community discussion or media coverage, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.35, < 2.0.61CPE matchmatch criteria
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
>= 2.2.0, < 2.2.6CPE matchmatch criteria
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:7:*:*:*:*:*:*:*
6CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora_core:6:*:*:*:*:*:*:*
6.06CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.90%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1290 is in the 95th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: ant-0:1.6.5-1jpp_1rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: avalon-logkit-0:1.2-2jpp_4rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: axis-0:1.2.1-1jpp_3rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: classpathx-jaf-0:1.0-2jpp_6rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: classpathx-mail-0:1.1.1-2jpp_8rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: geronimo-specs-0:1.0-0.M4.1jpp_10rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: jakarta-commons-modeler-0:2.0-3jpp_2rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: log4j-0:1.2.12-1jpp_1rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: mx4j-1:3.0.1-1jpp_4rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: pcsc-lite-0:1.3.3-3.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-ca-0:7.3.0-20.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-java-tools-0:7.3.0-10.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-kra-0:7.3.0-14.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-manage-0:7.3.0-19.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-native-tools-0:7.3.0-6.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-ocsp-0:7.3.0-13.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: rhpki-tks-0:7.3.0-13.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: tomcat5-0:5.5.23-0jpp_4rh.16
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: xerces-j2-0:2.7.1-1jpp_1rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 7.3Fixed in: xml-commons-0:1.3.02-2jpp_1rh
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: httpd-0:2.0.46-70.ent
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: httpd-0:2.0.52-38.ent
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: httpd-0:2.2.3-11.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Web Application Stack for RHEL 4Fixed in: httpd-0:2.0.59-1.el4s1.8
View patch

Vendor Advisories (1)

redhatCVE-2007-3847Moderate

httpd: out of bounds read

Aug 1, 2007

References

bugs.gentoo.org / show_bug.cgi
Issue TrackingThird Party Advisory
docs.info.apple.com / article.html
Broken Link
h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
Broken Link
httpd.apache.org / security/vulnerabilities_20.html
Vendor Advisory
httpd.apache.org / security/vulnerabilities_22.html
Vendor Advisory
lists.apple.com / archives/security-announce/2008/Mar/msg00001.html
Mailing List
lists.apple.com / archives/security-announce/2008//May/msg00001.html
Mailing List
lists.vmware.com / pipermail/security-announce/2009/000062.html
Mailing ListThird Party Advisory
marc.info
Issue TrackingMailing ListThird Party Advisory
marc.info
Issue TrackingMailing ListThird Party Advisory
marc.info
Issue TrackingMailing ListThird Party Advisory
secunia.com / advisories/26636
Not Applicable
secunia.com / advisories/26722
Not Applicable
secunia.com / advisories/26790
Not Applicable
secunia.com / advisories/26842
Not Applicable
secunia.com / advisories/26952
Not Applicable
secunia.com / advisories/26993
Not Applicable
secunia.com / advisories/27209
Not Applicable
secunia.com / advisories/27563
Not Applicable
secunia.com / advisories/27593
Not Applicable
secunia.com / advisories/27732
Not Applicable
secunia.com / advisories/27882
Not Applicable
secunia.com / advisories/27971
Not Applicable
secunia.com / advisories/28467
Not Applicable
secunia.com / advisories/28606
Not Applicable
secunia.com / advisories/28749
Not Applicable
secunia.com / advisories/28922
Not Applicable
secunia.com / advisories/29420
Not Applicable
secunia.com / advisories/30430
Not Applicable
security.gentoo.org / glsa/glsa-200711-06.xml
Third Party Advisory
issues.rpath.com / browse/RPL-1710
Broken Link
slackware.com / security/viewer.php
Third Party Advisory
lists.apache.org / thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r652fc951306cdeca5a276e2021a34878a76695a9f3cfb6490b4a6840%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rafd145ba6cd0a4ced113a5823cdaff45aeb36eb09855b216401c66d6%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/reb542d2038e9c331506e0cbff881b47e40fbe2bd93ff00979e60cdf7%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10525
Third Party Advisory
support.avaya.com / elmodocs2/security/ASA-2007-500.htm
Third Party Advisory
redhat.com / archives/fedora-package-announce/2007-September/msg00353.html
Mailing ListThird Party Advisory
www-1.ibm.com / support/docview.wss
Third Party Advisory
www-1.ibm.com / support/docview.wss
Third Party Advisory
www-1.ibm.com / support/docview.wss
Third Party Advisory
fujitsu.com / global/support/software/security/products-f/interstage-200802e.html
Third Party Advisory
mandriva.com / security/advisories
Broken Link
novell.com / linux/security/advisories/2007_61_apache2.html
Broken Link
oracle.com / technetwork/topics/security/cpujuly2013-1899826.html
Third Party Advisory
redhat.com / archives/fedora-package-announce/2007-September/msg00320.html
Mailing ListThird Party Advisory
redhat.com / support/errata/RHSA-2007-0746.html
Third Party Advisory
redhat.com / support/errata/RHSA-2007-0747.html
Third Party Advisory
redhat.com / support/errata/RHSA-2007-0911.html
Third Party Advisory
redhat.com / support/errata/RHSA-2008-0005.html
Third Party Advisory
securityfocus.com / archive/1/505990/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/25489
Third Party AdvisoryVDB Entry
securitytracker.com / id
Broken LinkThird Party AdvisoryVDB Entry
ubuntu.com / usn/usn-575-1
Third Party Advisory
us-cert.gov / cas/techalerts/TA08-150A.html
Third Party AdvisoryUS Government Resource
vupen.com / english/advisories/2007/3020
Permissions Required
vupen.com / english/advisories/2007/3095
Permissions Required
vupen.com / english/advisories/2007/3283
Permissions Required
vupen.com / english/advisories/2007/3494
Permissions Required
vupen.com / english/advisories/2007/3955
Permissions Required
vupen.com / english/advisories/2008/0233
Permissions Required
vupen.com / english/advisories/2008/0924/references
Permissions Required
vupen.com / english/advisories/2008/1697
Permissions Required