HOMEVULNERABILITIESCVE-2012-4528
MEDIUMPOC

CVE-2012-4528

NVD-CWE-noinfoPublished: December 28, 2012· Updated: Jun 16, 2026

5.0
CVSS v3.1

Official Description

The mod_security2 module before 2.7.0 for the Apache HTTP Server allows remote attackers to bypass rules, and deliver arbitrary POST data to a PHP application, via a multipart request in which an invalid part precedes the crafted data.

NVD Source

Technical Analysis

CVE-2012-4528 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2012-4528. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityP
AvailabilityNone
AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected Vendors & Products

Fedora1 product(s)
fedora
openSUSE1 product(s)
opensuse
trustwave1 product(s)
modsecurity
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2012-November/093011.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
ADVISORYhttp://seclists.org/fulldisclosure/2012/Oct/113
ADVISORYhttp://www.openwall.com/lists/oss-security/2012/10/18/14
ADVISORYhttps://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20121017-0_mod_security_ruleset_bypass.txt
ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2012-November/093011.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
ADVISORYhttp://seclists.org/fulldisclosure/2012/Oct/113
ADVISORYhttp://www.openwall.com/lists/oss-security/2012/10/18/14
ADVISORYhttps://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20121017-0_mod_security_ruleset_bypass.txt

All References (20)

→
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093011.htmlThird Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.htmlMailing List · Third Party Advisory
→
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.7.x/CHANGESBroken Link
→
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/apache2/msc_multipart.c?sortby=date&r1=2081&r2=2080&pathrev=2081Broken Link
→
http://mod-security.svn.sourceforge.net/viewvc/mod-security?view=revision&sortby=date&revision=2081Broken Link
→
http://seclists.org/fulldisclosure/2012/Oct/113Exploit · Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2012/10/18/14Mailing List · Third Party Advisory
→
https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20121017-0_mod_security_ruleset_bypass.txtThird Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093011.htmlThird Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.htmlMailing List · Third Party Advisory
→
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.7.x/CHANGESBroken Link

Quick Facts

CVE IDCVE-2012-4528
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
ExploitPOC
Affected3 vendor(s)
PublishedDec 28, 2012

Related CVEs (NVD-CWE-noinfo)

CVE-2009-2722
10.0
CVE-2005-4007
10.0
CVE-2026-46800
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CVE-2009-2721
10.0
CVE-2009-2723
10.0
CVE-2005-4200
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2012-4528 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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