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cve[email protected]CVE-2021-20277
HistoryMay 12, 2021 - 2:15 p.m.

CVE-2021-20277

2021-05-1214:15:11
CWE-787
CWE-125
web.nvd.nist.gov
725
4
samba
libldb
ldap
server crash
system availability
cve-2021-20277
nvd

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

79.1%

A flaw was found in Samba’s libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability.

Affected configurations

Vulners
NVD
Node
sambasambaRange≤4.14.1
OR
sambasambaRange≤4.13.6
OR
sambasambaRange≤4.12.13
VendorProductVersionCPE
sambasamba*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
sambasamba*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
sambasamba*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "samba",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "samba 4.14.1, samba 4.13.6, samba 4.12.13"
      }
    ]
  }
]

Social References

More

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

79.1%