Attacker Value
Unknown
0
CVE-2021-20277
0
CVE ID
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CVE-2021-20277
(Last updated November 08, 2023) ▾
MITRE ATT&CK
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Command and Control
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Credential Access
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Description
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.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
samba samba 4.14.1, samba 4.13.6, samba 4.12.13
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Vendors
- debian,
- fedoraproject,
- samba
Products
- debian linux 10.0,
- debian linux 9.0,
- fedora 32,
- fedora 33,
- fedora 34,
- samba
References
Advisory
Additional Info
Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Rapid7
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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