Samba up to 4.12.14/4.13.7/4.14.3 libldb out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Samba up to 4.12.14/4.13.7/4.14.3. It has been declared as critical. Affected by this issue is some unknown functionality of the component libldb. The manipulation results in out-of-bounds write. This vulnerability was named CVE-2021-20277. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Samba up to 4.12.14/4.13.7/4.14.3 (File Transfer Software). Affected is some unknown processing of the component libldb. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability.

The weakness was presented 05/12/2021. The advisory is available at samba.org. This vulnerability is traded as CVE-2021-20277. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 276443 (TencentOS Server 3: libldb (TSSA-2022:0208)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.12.14, 4.13.7 or 4.14.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (276443). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 276443
Nessus Name: TencentOS Server 3: libldb (TSSA-2022:0208)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.12.14/4.13.7/4.14.2

Timelineinfo

12/17/2020 🔍
05/12/2021 +145 days 🔍
05/12/2021 +0 days 🔍
11/21/2025 +1654 days 🔍

Sourcesinfo

Product: samba.org

Advisory: samba.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-20277 (🔍)
GCVE (CVE): GCVE-0-2021-20277
GCVE (VulDB): GCVE-100-174978

Entryinfo

Created: 05/12/2021 22:31
Updated: 11/21/2025 16:28
Changes: 05/12/2021 22:31 (38), 05/15/2021 15:50 (6), 11/21/2025 16:28 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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