CVE-2020-7957

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.

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

{
    "versions": [
        {
            "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

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "30"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "31"
            }
        ]
    }
]

source

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