FKIE_CVE-2021-43980

Vulnerability from fkie_nvd - Published: 2022-09-28 14:15 - Updated: 2025-05-21 15:15
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
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.
References
security@apache.orghttp://www.openwall.com/lists/oss-security/2022/09/28/1Mailing List, Third Party Advisory
security@apache.orghttps://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3Mailing List, Vendor Advisory
security@apache.orghttps://lists.debian.org/debian-lts-announce/2022/10/msg00029.htmlMailing List, Third Party Advisory
security@apache.orghttps://www.debian.org/security/2022/dsa-5265Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/09/28/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00029.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5265Third Party Advisory
Impacted products
Vendor Product Version
apache tomcat *
apache tomcat *
apache tomcat *
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
apache tomcat 10.1.0
debian debian_linux 10.0
debian debian_linux 11.0
To clipboard 

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      "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."
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  "id": "CVE-2021-43980",
  "lastModified": "2025-05-21T15:15:55.223",
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          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
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          "privilegesRequired": "NONE",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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