Ubuntu.comUB:CVE-2018-5709CVE-2018-5709
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
40.9%
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is
a variable “dbentry->n_key_data” in kadmin/dbutil/dump.c that can store
16-bit data but unknowingly the developer has assigned a “u4” variable to
it, which is for 32-bit data. An attacker can use this vulnerability to
affect other artifacts of the database as we know that a Kerberos database
dump file contains trusted data.
Notes
| Author | Note |
|---|---|
| ebarretto | according to debian security tracker: non-issue, codepath is only run on trusted input, potential integer overflow is non-issue |
| ccdm94 | no patch available in 2022-05-11. Unlikely to have a security impact. This is not considered a security issue according to various sources. |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
40.9%