CVE-2011-3192
HighExploitedPublic exploitThe byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in…
Published Aug 29, 2011 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2011-3192, DSA-2298-1
Key Facts
Patch immediately- CVE-2011-3192 is a high-severity vulnerability (CVSS 7.8 v2) affecting HTTP Server (Apache), Ubuntu Linux (Canonical), Opensuse and 16 more products.
- It is exploited in the wild, listed in Industry KEV feed since Aug 24, 2011. Public exploit code is available.
- EPSS estimates a 99% probability of exploitation in the next 30 days.
- Fixed versions are available, including HTTP Server 2.0.65, apache2 2.2.16-6+squeeze2, apache2 2.2.19-2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v2
7.8
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS (30-day exploit likelihood)
99%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2011-3192 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different vulnerability than CVE-2007-0086.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Aug 24, 2011 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
53 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| HTTP ServerApache | See advisory | 2.0.65 |
| Ubuntu LinuxCanonical | 10.04, 10.10, 11.04, 8.04 | n/a |
| OpensuseOpensuse | 11.3, 11.4 | n/a |
| Linux Enterprise ServerSuse | 10-sp2, 10-sp3, 10-sp4, 11-sp1 | n/a |
| Linux Enterprise Software Development KitSuse | 10-sp3, 10-sp4, 11-sp1 | n/a |
Patched Releases
HTTP Server
2.0.65
apache2
2.2.16-6+squeeze2, 2.2.19-2, 2.2.9-10+lenny10, 2.4.23-4.1
apache2-devel
2.4.23-4.1
apache2-doc
2.4.23-4.1
apache2-event
2.4.23-4.1
apache2-example-pages
2.4.23-4.1
apache2-prefork
2.4.23-4.1
apache2-utils
2.4.23-4.1
apache2-worker
2.4.23-4.1
httpd
0:2.0.46-78.ent, 0:2.2.15-9.el6_1.2, 0:2.2.17-14.1.ep5.el5, 2.2.15-9.0.1.el6_1.2, 2.2.21-1.18.amzn1, 2.2.3-53.0.1.el5_7.1
httpd-devel
2.2.15-9.0.1.el6_1.2, 2.2.21-1.18.amzn1, 2.2.3-53.0.1.el5_7.1
httpd-manual
2.2.15-9.0.1.el6_1.2, 2.2.21-1.18.amzn1, 2.2.3-53.0.1.el5_7.1
httpd-tools
2.2.15-9.0.1.el6_1.2, 2.2.21-1.18.amzn1
mod_ssl
1:2.2.15-9.0.1.el6_1.2, 1:2.2.21-1.18.amzn1, 1:2.2.3-53.0.1.el5_7.1
rootio-apache2
2.2.19-2
Timeline
Added to Industry KEV feed
Aug 24, 2011
Publicly disclosed
Aug 29, 2011
Last updated
Aug 4, 2026
Weakness Type
- CWE-400 Uncontrolled Resource Consumption
References
- advisoryopenSUSE-SU-2011:0993
- advisorySUSE-SU-2011:1000
- advisorySUSE-SU-2011:1007
- advisorySUSE-SU-2011:1010
- advisorySUSE-SU-2011:1216
FAQ
Common Questions.
The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different vulnerability than C…
Affected: HTTP Server (Apache); Ubuntu Linux (Canonical) versions 10.04, 10.10, 11.04, 8.04; Opensuse versions 11.3, 11.4, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Aug 24, 2011.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including HTTP Server 2.0.65, apache2 2.2.16-6+squeeze2, apache2 2.2.19-2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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