CVE-2011-3607

mediumpriority · track · 30EPSS 0.047 · 92 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.72% (92nd) EPSS

CVSS 4.4 · medium

Is it mine?

75 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

Integer overflow in the ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, allows local users to gain privileges via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, leading to a heap-based buffer overflow.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedhttpd-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-0:2.2.17-15.4.ep5.el5.src as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-0:2.2.17-15.4.ep5.el6.src as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-devel-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-devel-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-devel-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-devel-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-manual-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-manual-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-manual-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-manual-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-tools-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedhttpd-tools-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedmod_ssl-1:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedmod_ssl-1:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedmod_ssl-1:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
Fixedmod_ssl-1:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542
FixedRed Hat JBoss Web Server 1.0redhat_csaf
The References section of this erratum contains a download link (you must log in to download the update). Before applying the update, back up your existing JBoss Enterprise Web Server installation (including all applications and configuration files). The Apache HTTP Server must be restarted for this update to take effect.
https://access.redhat.com/errata/RHSA-2012:0543

cvss

Technical severity, 0–10. One row per scoring source.

4.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.4

v2.04.4mediumAV:L/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.4 · impact 6.4

v2.03.7lowAV:L/AC:M/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

v2.04.4mediumAV:L/AC:M/Au:N/C:P/I:P/A:Psecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-189USprimaryCWE-190US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-41769Apache < 2.0.64 / < 2.2.21 mod_setenvif - Integer OverflowPoC · exploit_db

affected products (75)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
apache http server= 2.0nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.28nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.32nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.34nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.35nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.36nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.37nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.38nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.39nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.40nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.41nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.42nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.43nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.44nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.45nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.46nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.47nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.48nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http server= 2.0.49nvdUScpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

showing 20 of 75

advisories (2)

Vendor and ecosystem advisories describing this.

RHSA-2012:0542Red Hat Security Advisory: httpd security and bug fix update2012-05-07csaf · redhat_csafUS
Updated httpd packages that fix multiple security issues and one bug are now available for JBoss Enterprise Web Server 1.0.2 for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
RHSA-2012:0543Red Hat Security Advisory: httpd security and bug fix update2012-05-07csaf · redhat_csafUS
An update for the Apache HTTP Server component for JBoss Enterprise Web Server 1.0.2 that fixes multiple security issues and one bug is now available from the Red Hat Customer Portal. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2011-11-08modified 2026-06-16

related (1,342)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2016-1010US	high8.8OT critical	19.3% (97th)	KEV	2016-03-12
Integer overflow in Adobe Flash Player before 18.0.0.333 and 19.x through 21.x before 21.0.0.182 on Windows and OS X and before 11.2.202.577 on Linux, Adobe AIR before 21.0.0.176,…
CVE-2015-8651US	high8.8OT critical	67.7% (99th)	KEV	2015-12-28
Integer overflow in Adobe Flash Player before 18.0.0.324 and 19.x and 20.x before 20.0.0.267 on Windows and OS X and before 11.2.202.559 on Linux, Adobe AIR before 20.0.0.233, Adob…
CVE-2013-2094US	high7.2OT critical	47.7% (99th)	KEV	2013-05-14
The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a craft…
CVE-2012-5054US	high8.8OT critical	21.2% (98th)	KEV	2012-09-24
Integer overflow in the copyRawDataTo method in the Matrix3D class in Adobe Flash Player before 11.4.402.265 allows remote attackers to execute arbitrary code via malformed argumen…
CVE-2015-1538US	high10.0	99.1% (100th)	Exploit	2015-10-01
Integer overflow in the SampleTable::setSampleToChunkParams function in SampleTable.cpp in libstagefright in Android before 5.1.1 LMY48I allows remote attackers to execute arbitrar…

+1337 more

references (143)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan