CVE-2012-2733

medium
Published 2012-11-16 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
5.0

Description

java/org/apache/coyote/http11/InternalNioInputBuffer.java in the HTTP NIO connector in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28 does not properly restrict the request-header size, which allows remote attackers to cause a denial of service (memory consumption) via a large amount of header data.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

VendorProductVersionsFixed
apache apachetomcat6.0
apache apachetomcat6.0.0
apache apachetomcat6.0.1
apache apachetomcat6.0.2
apache apachetomcat6.0.3
apache apachetomcat6.0.4
apache apachetomcat6.0.5
apache apachetomcat6.0.6
apache apachetomcat6.0.7
apache apachetomcat6.0.8
apache apachetomcat6.0.9
apache apachetomcat6.0.10
apache apachetomcat6.0.11
apache apachetomcat6.0.12
apache apachetomcat6.0.13
apache apachetomcat6.0.14
apache apachetomcat6.0.15
apache apachetomcat6.0.16
apache apachetomcat6.0.17
apache apachetomcat6.0.18
apache apachetomcat6.0.19
apache apachetomcat6.0.20
apache apachetomcat6.0.24
apache apachetomcat6.0.26
apache apachetomcat6.0.27
apache apachetomcat6.0.28
apache apachetomcat6.0.29
apache apachetomcat6.0.30
apache apachetomcat6.0.31
apache apachetomcat6.0.32
apache apachetomcat6.0.33
apache apachetomcat6.0.35
apache apachetomcat7.0.0
apache apachetomcat7.0.1
apache apachetomcat7.0.2
apache apachetomcat7.0.3
apache apachetomcat7.0.4
apache apachetomcat7.0.5
apache apachetomcat7.0.6
apache apachetomcat7.0.7
apache apachetomcat7.0.8
apache apachetomcat7.0.9
apache apachetomcat7.0.10
apache apachetomcat7.0.11
apache apachetomcat7.0.12
apache apachetomcat7.0.13
apache apachetomcat7.0.14
apache apachetomcat7.0.15
apache apachetomcat7.0.16
apache apachetomcat7.0.17
apache apachetomcat7.0.18
apache apachetomcat7.0.19
apache apachetomcat7.0.20
apache apachetomcat7.0.21
apache apachetomcat7.0.22
apache apachetomcat7.0.23
apache apachetomcat7.0.25

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.