CVE-2017-11103
CVSS V2 Medium 6.8
CVSS V3 High 8.1
Description
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.
Overview
- CVE ID
- CVE-2017-11103
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2017-07-13T13:29:00
- Last Modified Date
- 2020-08-18T15:05:49
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:* | 1 | OR | 7.4.0 | |
| cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.0.0 | 4.4.15 |
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.5.0 | 4.5.12 |
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.6.0 | 4.6.6 |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | 1 | OR | 11.0 | |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | 1 | OR | 10.13.1 | |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.samba.org/samba/security/CVE-2017-11103.html | Third Party Advisory |
| https://www.orpheus-lyre.info/ | Third Party Advisory |
| https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc | Third Party Advisory |
| https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0 | Release Notes |
| http://www.h5l.org/advisories.html?show=2017-07-11 | Broken Link |
| http://www.securitytracker.com/id/1038876 | Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/99551 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039427 | Third Party Advisory VDB Entry |
| https://support.apple.com/HT208144 | Third Party Advisory |
| https://support.apple.com/HT208112 | Third Party Advisory |
| http://www.debian.org/security/2017/dsa-3912 | Third Party Advisory |
| https://support.apple.com/HT208221 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2017-11103 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11103 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:20:21 | Added to TrackCVE | |||
| 2022-12-02 18:38:15 | 2017-07-13T13:29Z | 2017-07-13T13:29:00 | CVE Published Date | updated |
| 2022-12-02 18:38:15 | 2020-08-18T15:05:49 | CVE Modified Date | updated | |
| 2022-12-02 18:38:15 | Analyzed | Vulnerability Status | updated |