CVE-2021-30639

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Source
https://cve.org/CVERecord?id=CVE-2021-30639
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30639.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-30639
Aliases
Downstream
Published
2021-07-12T15:15:08.333Z
Modified
2026-04-10T04:32:15.233110Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.

References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
c47f86adea090175669df8b2ca04c93050bcaf8c
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
7b4007a6a77300056f4681b064d7332c2284cbdd
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
50c2c705bb74e35ada28147aa2649cb43398b3f9
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
ec47d24b49bc176f47b786bc96248e94d1823685
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "8.5.64"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "9.0.44"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "10.0.3"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "10.0.4"
        }
    ]
}

Affected versions

10.*
10.0.3
10.0.4
8.*
8.5.64
9.*
9.0.44

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30639.json"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "5.10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-NA"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_10"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_5"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_6"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_7"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_8"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.10.0-update_9"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "23.1"
            }
        ]
    }
]