CVE-2020-27840

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Source
https://cve.org/CVERecord?id=CVE-2020-27840
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-27840.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-27840
Downstream
Related
Published
2021-05-12T15:15:07.543Z
Modified
2026-03-15T15:10:19.142724Z
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 flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability.

References

Affected packages

Git / github.com/samba-team/samba

Affected ranges

Type
GIT
Repo
https://github.com/samba-team/samba
Events
Introduced
df33344d8eb40221d60c99931690703a11d91bc2
Fixed
bb2f64babf1a2bfb780d0325e859f796d0ce1647
Introduced
3fe82c204f0d88cb6db50b7bd1f798b591a918f8
Fixed
440b75fda7092b88b1986759c40f95ed65c2da24
Introduced
9b49519cae3e967af9ea48dc5fcfb6c145e31db4
Fixed
ed4a04eca53906ab7d69667545b414fa84fe5404
Database specific 
{
    "versions": [
        {
            "introduced": "4.0.0"
        },
        {
            "fixed": "4.12.13"
        },
        {
            "introduced": "4.13.0"
        },
        {
            "fixed": "4.13.6"
        },
        {
            "introduced": "4.14.0"
        },
        {
            "fixed": "4.14.1"
        }
    ]
}

Affected versions

samba-4.*
samba-4.13.0
samba-4.13.1
samba-4.13.2
samba-4.13.3
samba-4.13.4
samba-4.13.5
samba-4.14.0

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "32"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-27840.json"