CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheusβ 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 βenc_partβ instead of the unencrypted version stored in βticketβ. 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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.10-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.11-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.12-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.13-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.14-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.17-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
Alpine | 3.18-main | noarch | heimdal | <Β 7.4.0-r0 | UNKNOWN |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%