CVE-2011-1475

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-04-08 · updated 2026-06-16
Weakness: CWE-20

Description

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."

Affected products

Apache Tomcat: 7.0.0, 7.0.0-beta, 7.0.1, 7.0.2, 7.0.3, 7.0.4 (+7)

References

http://seclists.org/fulldisclosure/2011/Apr/97
http://securityreason.com/securityalert/8188
http://svn.apache.org/viewvc?view=revision&revision=1086349
http://svn.apache.org/viewvc?view=revision&revision=1086352
http://tomcat.apache.org/security-7.html
http://www.securityfocus.com/archive/1/517363
http://www.securityfocus.com/bid/47199
http://www.securitytracker.com/id?1025303
http://www.vupen.com/english/advisories/2011/0894
https://exchange.xforce.ibmcloud.com/vulnerabilities/66676
https://issues.apache.org/bugzilla/show_bug.cgi?id=50957
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12374

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