CVE-2011-1475

Gentoo Linux Security Advisory 201206-24

Severity Score

5.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The HTTP BIO connector in Apache Tomcat 7.0.x before 7.0.12 does not properly handle HTTP pipelining, which allows remote attackers to read responses intended for other clients in opportunistic circumstances by examining the application data in HTTP packets, related to "a mix-up of responses for requests from different users."

El conector HTTP BIO en Apache Tomcat v7.0.x anterior a v7.0.12 no controla correctamente HTTP "pipelining", permitiendo a atacantes remotos leer las respuestas para otros clientes en circunstancias oportunistas mediante la examinación de los datos de la aplicación en paquetes HTTP, relacionado con una "una mezcla de respuestas a las peticiones de los diferentes usuarios"

Changes introduced into Apache Tomcat version 7.0.11 to the HTTP BIO connector to support Servlet 3.0 asynchronous requests did not fully account for HTTP pipelining. As a result, when using HTTP pipelining a range of unexpected behaviours occurred including the mixing up of responses between requests. While the mix-up in responses was only observed between requests from the same user, a mix-up of responses for requests from different users may also be possible.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-03-21 CVE Reserved
2011-04-06 CVE Published
2018-11-06 First Exploit
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (13)

URL	Tag	Source
http://seclists.org/fulldisclosure/2011/Apr/97	Mailing List
http://securityreason.com/securityalert/8188	Third Party Advisory
http://www.securityfocus.com/archive/1/517363	Mailing List
http://www.securityfocus.com/bid/47199	Vdb Entry
http://www.securitytracker.com/id?1025303	Vdb Entry
http://www.vupen.com/english/advisories/2011/0894	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/66676	Vdb Entry
https://issues.apache.org/bugzilla/show_bug.cgi?id=50957	X_refsource_misc
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12374	Signature

URL	Date	SRC
https://github.com/samaujs/CVE-2011-1475	2018-11-06

URL	Date	SRC
http://svn.apache.org/viewvc?view=revision&revision=1086349	2017-09-19
http://svn.apache.org/viewvc?view=revision&revision=1086352	2017-09-19

URL	Date	SRC
http://tomcat.apache.org/security-7.html	2017-09-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.0 Search vendor "Apache" for product "Tomcat" and version "7.0.0"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.0 Search vendor "Apache" for product "Tomcat" and version "7.0.0"		beta		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.1 Search vendor "Apache" for product "Tomcat" and version "7.0.1"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.2 Search vendor "Apache" for product "Tomcat" and version "7.0.2"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.3 Search vendor "Apache" for product "Tomcat" and version "7.0.3"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.4 Search vendor "Apache" for product "Tomcat" and version "7.0.4"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.5 Search vendor "Apache" for product "Tomcat" and version "7.0.5"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.6 Search vendor "Apache" for product "Tomcat" and version "7.0.6"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.7 Search vendor "Apache" for product "Tomcat" and version "7.0.7"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.8 Search vendor "Apache" for product "Tomcat" and version "7.0.8"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.9 Search vendor "Apache" for product "Tomcat" and version "7.0.9"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.10 Search vendor "Apache" for product "Tomcat" and version "7.0.10"		-		Affected
Apache Search vendor "Apache"		Tomcat Search vendor "Apache" for product "Tomcat"				7.0.11 Search vendor "Apache" for product "Tomcat" and version "7.0.11"		-		Affected