Alpine Linux Development TeamALPINE:CVE-2017-17439CVE-2017-17439
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.66 Medium
EPSS
Percentile
97.9%
In Heimdal through 7.4, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that case, leading to a segmentation fault. This is related to the _kdc_as_rep function in kdc/kerberos5.c and the der_length_visible_string function in lib/asn1/der_length.c.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Alpine | edge-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.10-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.11-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.12-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.13-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.14-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.15-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.16-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.17-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
| Alpine | 3.18-main | noarch | heimdal | < 7.4.0-r2 | UNKNOWN |
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.66 Medium
EPSS
Percentile
97.9%