CVE-2017-11103
Published Jul 13, 2017
Last updated 4 years ago
Overview
- 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.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 8.1
- Impact score
- 5.9
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 6.8
- Impact score
- 6.4
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
- nvd@nist.gov
- CWE-345
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BBB557FB-2D64-4B67-ABB4-232B8532E9F7",
"versionEndExcluding": "7.4.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3B2AEFCC-A2F6-45A6-A2EF-24F7906E44E2"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F4D6C6EB-04EC-4514-947F-37DA23C07BD1",
"versionEndExcluding": "4.4.15",
"versionStartIncluding": "4.0.0"
},
{
"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C93F9D32-8BFD-484B-8D16-6A440132A4E3",
"versionEndExcluding": "4.5.12",
"versionStartIncluding": "4.5.0"
},
{
"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "92EBC874-FF91-47E4-B57D-A54DF0859239",
"versionEndExcluding": "4.6.6",
"versionStartIncluding": "4.6.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17CE3EBB-FF76-4158-81FE-63AECECA988E",
"versionEndExcluding": "11.0"
},
{
"criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C43CA59D-847F-4225-A7A6-02DEB1BB4F64",
"versionEndExcluding": "10.13.1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"
}
],
"operator": "OR"
}
]
}
]