HIGH
tomcat: remote DoS via NIO connector
Published Feb 10, 2011
7.5
HIGHCVSS 3.1
EPSS 7.89%
Description
Apache Tomcat 7.0.0 through 7.0.6 and 6.0.0 through 6.0.30 does not enforce the maxHttpHeaderSize limit for requests involving the NIO HTTP connector, which allows remote attackers to cause a denial of service (OutOfMemoryError) via a crafted request.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 6.0.0
- 6.0.1
- 6.0.2
- 6.0.3
- 6.0.4
- 6.0.5
- 6.0.6
- 6.0.7
- 6.0.8
- 6.0.9
- 6.0.10
- 6.0.11
- 6.0.12
- 6.0.13
- 6.0.14
- 6.0.15
- 6.0.16
- 6.0.17
- 6.0.18
- 6.0.19
- 6.0.20
- 6.0.24
- 6.0.26
- 6.0.27
- 6.0.28
- 6.0.29
- 6.0.30
No data.
JBEWS 1.0 for RHEL 4
tomcat6-0:6.0.24-11.patch_03.ep5.el4
Fixed · RHSA-2011:0348
Red Hat Enterprise Linux 6
tomcat6-0:6.0.24-24.el6_0
Fixed · RHSA-2011:0335
Red Hat JBoss Enterprise Web Server 1 for RHEL 5
tomcat6-0:6.0.24-11.patch_03.ep5.el5
Fixed · RHSA-2011:0348
Red Hat JBoss Web Server 1.0
n/a
Fixed · RHSA-2011:0350
| Product | Package | State | Advisory |
|---|---|---|---|
| JBEWS 1.0 for RHEL 4 | tomcat6-0:6.0.24-11.patch_03.ep5.el4 | Fixed | RHSA-2011:0348 |
| Red Hat Enterprise Linux 6 | tomcat6-0:6.0.24-24.el6_0 | Fixed | RHSA-2011:0335 |
| Red Hat JBoss Enterprise Web Server 1 for RHEL 5 | tomcat6-0:6.0.24-11.patch_03.ep5.el5 | Fixed | RHSA-2011:0348 |
| Red Hat JBoss Web Server 1.0 | n/a | Fixed | RHSA-2011:0350 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH GHSA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.89% 0.07885
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07885
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.89% (0.07885) | 94.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.89% (0.07885) | 93.94th | v5 (v2026.06.15) |
| May 30, 2025 | 16.98% (0.16975) | 94.59th | v4 (v2025.03.14) |
| Mar 30, 2025 | 23.76% (0.23764) | 95.54th | v4 (v2025.03.14) |
| Mar 29, 2025 | 27.62% (0.27617) | 94.32th | v4 (v2025.03.14) |
| Mar 17, 2025 | 23.76% (0.23764) | 95.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.21% (0.01214) | 85.91th | v3 (v2023.03.01) |
| Apr 18, 2024 | 1.21% (0.01214) | 85.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.21% (0.01214) | 83.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.39% (0.06394) | 90.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.39% (0.06394) | 90.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.39% (0.06394) | 77.96th | v2 (v2022.01.01) |
Weaknesses (1)
References (33)
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html vendor-advisoryx_refsource_APPLE
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=bugtraq&m=139344343412337&w=2 vendor-advisoryx_refsource_HP
- http://osvdb.org/70809 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/43192 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/45022 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/57126 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/8074 third-party-advisoryx_refsource_SREASON
- http://support.apple.com/kb/HT5002 x_refsource_CONFIRM
- http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5098550.html x_refsource_CONFIRM
- http://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.32 x_refsource_CONFIRMPatchVendor Advisory
- http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.8_%28released_5_Feb_2011%29 x_refsource_CONFIRM
- http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.8_(released_5_Feb_2011)
- http://www.debian.org/security/2011/dsa-2160 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/516214/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/46164 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1025027 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2011/0293 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-0534 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=675338 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65162 vdb-entryx_refsource_XF
- https://github.com/advisories/GHSA-43v2-6grp-9pp9 Advisory
- https://github.com/apache/tomcat/commit/008447095ce8c3a8f713093d5e618f3f06f94ea8
- https://nvd.nist.gov/vuln/detail/CVE-2011-0534
- https://support.apple.com/kb/HT5002
- https://web.archive.org/web/20110801035315/http://secunia.com/advisories/45022
- https://web.archive.org/web/20120120085637/http://securityreason.com/securityalert/8074
- https://web.archive.org/web/20121024140440/http://secunia.com/advisories/43192
- https://web.archive.org/web/20121212040149/http://www.securitytracker.com/id?1025027
- https://web.archive.org/web/20131227020011/http://www.securityfocus.com/bid/46164
- https://web.archive.org/web/20151017023138/http://secunia.com/advisories/57126
- https://web.archive.org/web/20200517155748/http://www.securityfocus.com/archive/1/516214/100/0/threaded
- https://www.cve.org/CVERecord?id=CVE-2011-0534
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Feb 10, 2011
Updated Aug 6, 2024
Reserved Jan 20, 2011
Link CVE-2011-0534
CISA Vulnrichment
GHSA-43V2-6GRP-9PP9 Updated n/a