Overview
- Description
- A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.
- Source
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 3.6
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 3.5
- Impact score
- 2.9
- Exploitability score
- 6.8
- Vector string
- AV:N/AC:M/Au:S/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-617
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "47D60B1D-E4D9-4FF8-8C98-7ACCF81D3F24",
"versionEndExcluding": "5-1.17"
}
],
"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"
}
],
"operator": "OR"
}
]
}
]