5

CVE-2009-0033: apache tomcat Improper Input Validation

Modified
AliasesGHSA-5cw4-ggx9-36vg
Published 05-06-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-0033 is a medium (CVSS 5.0) Improper Input Validation vulnerability in apache tomcat. EPSS estimates a 10.05% chance of exploitation in the next 30 days, higher than 95.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
10.05%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9
DSA-2207-1RHSA-2009:1164RHSA-2009:1454RHSA-2009:1506RHSA-2009:1562RHSA-2009:1563

Timeline

  1. 05-06-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

10.05%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 10.05% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Apache1 product
  • tomcatEOL4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.3:beta | 4.1.4 | 4.1.5 | 4.1.6 | 4.1.7 | 4.1.8 | 4.1.9 | 4.1.9:beta | 4.1.10 | 4.1.11 | 4.1.12 | 4.1.13 | 4.1.14 | 4.1.15 | 4.1.16 | 4.1.17 | 4.1.18 | 4.1.19 | 4.1.20 | 4.1.21 | 4.1.22 | 4.1.23 | 4.1.24 | 4.1.25 | 4.1.26 | 4.1.27 | 4.1.28 | 4.1.29 | 4.1.30 | 4.1.31 | 4.1.32 | 4.1.33 | 4.1.34 | 4.1.35 | 4.1.36 | 4.1.37 | 4.1.38 | 4.1.39 | 5.5.0 | 5.5.1 | 5.5.2 | 5.5.3 | 5.5.4 | 5.5.5 | 5.5.6 | 5.5.7 | 5.5.8 | 5.5.9 | 5.5.10 | 5.5.11 | 5.5.12 | 5.5.13 | 5.5.14 | 5.5.15 | 5.5.16 | 5.5.17 | 5.5.18 | 5.5.19 | 5.5.20 | 5.5.21 | 5.5.22 | 5.5.23 | 5.5.24 | 5.5.25 | 5.5.26 | 5.5.27 | 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
Org.apache.tomcat1 product
  • tomcat≥ 4.1.0, ≤ 4.1.39 | ≥ 5.5.0, ≤ 5.5.27 | ≥ 6.0.0, ≤ 6.0.18

2 vendors · 2 products

References

55 links
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