CVE-2017-11103
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
Heimdal en versiones anteriores a la 7.4 permite que atacantes remotos suplanten servicios con ataques Orpheus' Lyre ya que obtiene nombres de servicios principales, de manera que viola la especificación del protocolo Kerberos 5. En _krb5_extract_ticket() el nombre del servicio KDC-REP se debe obtener de la versión cifrada almacenada en 'enc_part' en lugar de la versión sin cifrar almacenada en 'ticket'. El uso de versiones sin cifrar supone una oportunidad para que se lleve a cabo una suplantación del servidor exitosa además de otros ataques. NOTA: este CVE solo es aplicable a Heimdal y otros productos que embeben código Heimdal.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2017-07-07 CVE Reserved
- 2017-07-13 CVE Published
- 2023-10-17 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-345: Insufficient Verification of Data Authenticity
CAPEC
References (12)
| URL | Tag | Source |
|---|---|---|
| http://www.h5l.org/advisories.html?show=2017-07-11 | Broken Link | |
| http://www.securityfocus.com/bid/99551 | Third Party Advisory | |
| http://www.securitytracker.com/id/1038876 | Third Party Advisory | |
| http://www.securitytracker.com/id/1039427 | Third Party Advisory | |
| https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0 | Release Notes | |
| https://support.apple.com/HT208112 | Third Party Advisory |
|
| https://support.apple.com/HT208144 | Third Party Advisory |
|
| https://support.apple.com/HT208221 | Third Party Advisory |
|
| https://www.orpheus-lyre.info | Third Party Advisory | |
| https://www.samba.org/samba/security/CVE-2017-11103.html | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3912 | 2020-08-18 | |
| https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc | 2020-08-18 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Heimdal Project Search vendor "Heimdal Project" | Heimdal Search vendor "Heimdal Project" for product "Heimdal" | < 7.4.0 Search vendor "Heimdal Project" for product "Heimdal" and version " < 7.4.0" | - |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | - | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.0.0 < 4.4.15 Search vendor "Samba" for product "Samba" and version " >= 4.0.0 < 4.4.15" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.5.0 < 4.5.12 Search vendor "Samba" for product "Samba" and version " >= 4.5.0 < 4.5.12" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.6.0 < 4.6.6 Search vendor "Samba" for product "Samba" and version " >= 4.6.0 < 4.6.6" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Iphone Os Search vendor "Apple" for product "Iphone Os" | < 11.0 Search vendor "Apple" for product "Iphone Os" and version " < 11.0" | - |
Affected
| ||||||
| Apple Search vendor "Apple" | Mac Os X Search vendor "Apple" for product "Mac Os X" | < 10.13.1 Search vendor "Apple" for product "Mac Os X" and version " < 10.13.1" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
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
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||