CVE-2021-43980

The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.

CVSS v3.0 3.7 LOW

3.7^/10

CVSS v3.0 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2022/09/28/1	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00029.html	Mailing List Third Party Advisory
https://www.debian.org/security/2022/dsa-5265	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:tomcat:10.1.0:milestone3::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone4::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone5::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone1::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone2::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone7::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone8::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone9::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone6::::::
	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat::::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone10::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone11::::::
	cpe:2.3:a:apache:tomcat:10.1.0:milestone12::::::

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:10.0:::::::*
	cpe:2.3:o:debian:debian_linux:11.0:::::::*

Information

Published : 2022-09-28 07:15

Updated : 2022-11-09 20:00

NVD link : CVE-2021-43980

Mitre link : CVE-2021-43980

JSON object : View

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Advertisement

Products Affected

debian

debian_linux

apache

tomcat

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3", "name": "https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3", "tags": ["Mailing List", "Vendor Advisory"], "refsource": "MISC"}, {"url": "http://www.openwall.com/lists/oss-security/2022/09/28/1", "name": "[oss-security] 20220928 CVE-2021-43980: Apache Tomcat: Information disclosure", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00029.html", "name": "[debian-lts-announce] 20221026 [SECURITY] [DLA 3160-1] tomcat9 security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://www.debian.org/security/2022/dsa-5265", "name": "DSA-5265", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-362"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-43980", "ASSIGNER": "security@apache.org"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.7, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.2}}, "publishedDate": "2022-09-28T14:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone7:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone8:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone9:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone6:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "8.5.77", "versionStartIncluding": "8.5.0"}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "9.0.60", "versionStartIncluding": "9.0.0"}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "10.0.18", "versionStartIncluding": "10.0.0"}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone11:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:apache:tomcat:10.1.0:milestone12:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-11-10T04:00Z"}