CVE-2020-7957

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Source
https://cve.org/CVERecord?id=CVE-2020-7957
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-7957.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-7957
Downstream
Related
Published
2020-02-12T17:15:12.563Z
Modified
2026-05-08T04:43:52.814084Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "30"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "31"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/dovecot/core

Affected ranges

Type
GIT
Repo
https://github.com/dovecot/core
Events
Introduced
e7f79df9925091027280d88db05fb0135e35e75a
Fixed
9f41b88fafd73dbc2b33965267425813b9c6456b
Database specific 
{
    "source": "CPE_FIELD",
    "cpe": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.3.9"
        },
        {
            "fixed": "2.3.9.3"
        }
    ]
}

Affected versions

2.*
2.3.9
2.3.9.1
2.3.9.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-7957.json"