CVE-2011-3607 EXPLOIT
4.4
MEDIUM · CVSS 2.0 · EPSS 4.7% (pctl 92)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 4.4 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:M/Au:N/C:P/I:P/A:P |
| EPSS | 4.72% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-189 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2011-11-08 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| apache | http server |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Apache < 2.0.64 / < 2.2.21 mod_setenvif - Integer Overflow | 2011-11-02 |
References
- http://archives.neohapsis.com/archives/fulldisclosure/2011-11/0023.html
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
- http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
- http://marc.info/?l=bugtraq&m=133294460209056&w=2
- http://marc.info/?l=bugtraq&m=133494237717847&w=2
- http://marc.info/?l=bugtraq&m=134987041210674&w=2
- http://rhn.redhat.com/errata/RHSA-2012-0128.html
- http://rhn.redhat.com/errata/RHSA-2012-0542.html
- http://rhn.redhat.com/errata/RHSA-2012-0543.html
- http://secunia.com/advisories/45793
- http://secunia.com/advisories/48551
- http://securitytracker.com/id?1026267
- http://support.apple.com/kb/HT5501
- http://www.debian.org/security/2012/dsa-2405
- http://www.fujitsu.com/global/support/software/security/products-f/interstage-201303e.html
- http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/
- http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/DemoExploit.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:003
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
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