// For flags

CVE-2022-29404

Denial of service in mod_lua r:parsebody

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0) may cause a denial of service due to no default limit on possible input size.

En Apache HTTP Server 2.4.53 y anteriores, una petición maliciosa a un script lua que llame a r:parsebody(0) puede causar una denegación de servicio debido a que no presenta un límite por defecto en el tamaño posible de la entrada

A flaw was found in the mod_lua module of httpd. A malicious request to a Lua script that calls parsebody(0) can lead to a denial of service due to no default limit on the possible input size.

USN-5487-1 fixed a vulnerabilities in Apache. Unfortunately, that update introduced a regression when proxying balancer manager connections in some configurations on Ubuntu 14.04 ESM. This update reverts those changes till further fix. It was discovered that Apache HTTP Server mod_proxy_ajp incorrectly handled certain crafted request. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack. It was discovered that Apache HTTP Server incorrectly handled certain request. An attacker could possibly use this issue to cause a denial of service. It was discovered that Apache HTTP Server incorrectly handled certain request. An attacker could possibly use this issue to cause a crash or expose sensitive information. Multiple other issues were also originally addressed.

*Credits: The Apache HTTP Server project would like to thank Ronald Crane (Zippenhop LLC) for reporting this issue
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-04-16 CVE Reserved
  • 2022-06-08 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
Http Server
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<= 2.4.53
Search vendor "Apache" for product "Http Server" and version " <= 2.4.53"
-
Affected
Fedoraproject
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Fedora
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35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
Fedoraproject
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Fedora
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36
Search vendor "Fedoraproject" for product "Fedora" and version "36"
-
Affected
Netapp
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Clustered Data Ontap
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--
Affected