CVE-2016-2123
Samba NDR Parsing ndr_pull_dnsp_name Heap-based Buffer Overflow Remote Code Execution Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.
Se ha encontrado un error en Samba, de la versión 4.0.0 a la 4.5.2. La rutina de Samba ndr_pull_dnsp_name contiene un problema de envoltorio de enteros que conduce a una sobrescritura de memoria controlada por el atacante. ndr_pull_dnsp_name analiza datos de la base de datos ldb Samba Active Directory. Cualquier usuario que pueda escribir en el atributo dnsRecord mediante LDAP puede desencadenar esta corrupción de memoria. Por defecto, todos los usuarios LDAP autenticados pueden escribir en el atributo dnsRecord en nuevos objetos DNS. Esto provoca un escalado de privilegios remotos.
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samba. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of NDR data. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code under the context of current process.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-01-29 CVE Reserved
- 2016-12-19 CVE Published
- 2024-07-17 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-122: Heap-based Buffer Overflow
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/94970 | Third Party Advisory | |
| http://www.securitytracker.com/id/1037493 | Third Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123 | Issue Tracking |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.samba.org/samba/security/CVE-2016-2123.html | 2024-02-08 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.0.0 <= 4.0.26 Search vendor "Samba" for product "Samba" and version " >= 4.0.0 <= 4.0.26" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.1.0 <= 4.1.23 Search vendor "Samba" for product "Samba" and version " >= 4.1.0 <= 4.1.23" | - |
Affected
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| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.2.0 <= 4.2.14 Search vendor "Samba" for product "Samba" and version " >= 4.2.0 <= 4.2.14" | - |
Affected
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| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.3.0 < 4.3.13 Search vendor "Samba" for product "Samba" and version " >= 4.3.0 < 4.3.13" | - |
Affected
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| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.4.0 < 4.4.8 Search vendor "Samba" for product "Samba" and version " >= 4.4.0 < 4.4.8" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.5.0 < 4.5.3 Search vendor "Samba" for product "Samba" and version " >= 4.5.0 < 4.5.3" | - |
Affected
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