CVE-2018-16841
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.
Samba, desde la versión 4.3.0 antes de las versiones 4.7.12, 4.8.7 y 4.9.3, es vulnerable a una denegación de servicio (DoS). Cuando se configura para aceptar la autenticación por smartcard, el KDC de Samba llamará a talloc_free() dos veces en la misma memoria si la entidad de seguridad en un certificado firmado de forma válida no coincide con la entidad en AS-REQ. Esto solo es posible tras la autenticación con un certificado de confianza. talloc es resistente a corrupción de una doble liberación (double free) con talloc_free() y llama directamente a abort(), terminando el proceso KDC.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2018-09-11 CVE Reserved
- 2018-11-27 CVE Published
- 2024-07-17 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-415: Double Free
- CWE-416: Use After Free
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/106023 | Third Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 | Issue Tracking | |
| https://security.netapp.com/advisory/ntap-20181127-0001 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.samba.org/samba/security/CVE-2018-16841.html | 2022-08-29 |
| URL | Date | SRC |
|---|---|---|
| https://security.gentoo.org/glsa/202003-52 | 2022-08-29 | |
| https://usn.ubuntu.com/3827-1 | 2022-08-29 | |
| https://usn.ubuntu.com/3827-2 | 2022-08-29 | |
| https://www.debian.org/security/2018/dsa-4345 | 2022-08-29 |
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" | >= 4.3.0 < 4.7.12 Search vendor "Samba" for product "Samba" and version " >= 4.3.0 < 4.7.12" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.8.0 < 4.8.7 Search vendor "Samba" for product "Samba" and version " >= 4.8.0 < 4.8.7" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.9.0 < 4.9.3 Search vendor "Samba" for product "Samba" and version " >= 4.9.0 < 4.9.3" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||