CVE-2012-0840

Apache APR - Hash Collision Denial of Service

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

tables/apr_hash.c in the Apache Portable Runtime (APR) library through 1.4.5 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

tables/apr_hash.c en la librería Apache Portable Runtime (APR) hasta v1.4.5 procesa las colisiones Hash de forma predecible, lo que permite a atacantes dependiendo del contexto provocar una denegación de servicio (consumo de CPU) a través de una entrada manipulada sobre una aplicación que mantiene una tabla hash.

*Credits: N/A

CVSS Scores

NISTv2 5.0

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

2012-01-05 First Exploit
2012-01-19 CVE Reserved
2012-02-10 CVE Published
2024-08-06 CVE Updated
2024-09-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (11)

URL	Tag	Source
http://mail-archives.apache.org/mod_mbox/apr-commits/201201.mbox/%3C20120115003715.071D423888FD%40eris.apache.org%3E	Mailing List
http://openwall.com/lists/oss-security/2012/02/08/3	Mailing List
http://openwall.com/lists/oss-security/2012/02/09/1	Mailing List
http://www.mail-archive.com/dev%40apr.apache.org/msg24439.html	Mailing List
http://www.mail-archive.com/dev%40apr.apache.org/msg24472.html	Mailing List
http://www.mail-archive.com/dev%40apr.apache.org/msg24473.html	Mailing List
https://exchange.xforce.ibmcloud.com/vulnerabilities/73096	Vdb Entry

URL	Date	SRC
https://www.exploit-db.com/exploits/36669	2012-01-05

URL	Date	SRC
http://svn.apache.org/viewvc?rev=1231605&view=rev	2023-11-07

URL	Date	SRC
http://secunia.com/advisories/47862	2023-11-07
http://www.mandriva.com/security/advisories?name=MDVSA-2012:019	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				<= 1.4.5 Search vendor "Apache" for product "Portable Runtime" and version " <= 1.4.5"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.1 Search vendor "Apache" for product "Portable Runtime" and version "0.9.1"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.2 Search vendor "Apache" for product "Portable Runtime" and version "0.9.2"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.2-dev Search vendor "Apache" for product "Portable Runtime" and version "0.9.2-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.3 Search vendor "Apache" for product "Portable Runtime" and version "0.9.3"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.3-dev Search vendor "Apache" for product "Portable Runtime" and version "0.9.3-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.4 Search vendor "Apache" for product "Portable Runtime" and version "0.9.4"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.5 Search vendor "Apache" for product "Portable Runtime" and version "0.9.5"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.6 Search vendor "Apache" for product "Portable Runtime" and version "0.9.6"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.7 Search vendor "Apache" for product "Portable Runtime" and version "0.9.7"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.7-dev Search vendor "Apache" for product "Portable Runtime" and version "0.9.7-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.8 Search vendor "Apache" for product "Portable Runtime" and version "0.9.8"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.9 Search vendor "Apache" for product "Portable Runtime" and version "0.9.9"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				0.9.16-dev Search vendor "Apache" for product "Portable Runtime" and version "0.9.16-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.0 Search vendor "Apache" for product "Portable Runtime" and version "1.3.0"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.1 Search vendor "Apache" for product "Portable Runtime" and version "1.3.1"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.2 Search vendor "Apache" for product "Portable Runtime" and version "1.3.2"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.3 Search vendor "Apache" for product "Portable Runtime" and version "1.3.3"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.4 Search vendor "Apache" for product "Portable Runtime" and version "1.3.4"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.4-dev Search vendor "Apache" for product "Portable Runtime" and version "1.3.4-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.5 Search vendor "Apache" for product "Portable Runtime" and version "1.3.5"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.6 Search vendor "Apache" for product "Portable Runtime" and version "1.3.6"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.6-dev Search vendor "Apache" for product "Portable Runtime" and version "1.3.6-dev"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.7 Search vendor "Apache" for product "Portable Runtime" and version "1.3.7"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.8 Search vendor "Apache" for product "Portable Runtime" and version "1.3.8"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.9 Search vendor "Apache" for product "Portable Runtime" and version "1.3.9"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.10 Search vendor "Apache" for product "Portable Runtime" and version "1.3.10"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.11 Search vendor "Apache" for product "Portable Runtime" and version "1.3.11"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.12 Search vendor "Apache" for product "Portable Runtime" and version "1.3.12"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.3.13 Search vendor "Apache" for product "Portable Runtime" and version "1.3.13"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.4.0 Search vendor "Apache" for product "Portable Runtime" and version "1.4.0"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.4.1 Search vendor "Apache" for product "Portable Runtime" and version "1.4.1"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.4.2 Search vendor "Apache" for product "Portable Runtime" and version "1.4.2"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.4.3 Search vendor "Apache" for product "Portable Runtime" and version "1.4.3"		-		Affected
Apache Search vendor "Apache"		Portable Runtime Search vendor "Apache" for product "Portable Runtime"				1.4.4 Search vendor "Apache" for product "Portable Runtime" and version "1.4.4"		-		Affected