Ubuntu.comUB:CVE-2018-20679CVE-2018-20679
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.006 Low
EPSS
Percentile
77.5%
An issue was discovered in BusyBox before 1.30.0. An out of bounds read in
udhcp components (consumed by the DHCP server, client, and relay) allows a
remote attacker to leak sensitive information from the stack by sending a
crafted DHCP message. This is related to verification in udhcp_get_option()
in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.
Bugs
- <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=918846>
- <https://bugs.busybox.net/show_bug.cgi?id=11506>
Notes
| Author | Note |
|---|---|
| mdeslaur | this fix is incomplete, see CVE-2019-5747 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | busybox | < 1:1.27.2-2ubuntu3.2 | UNKNOWN |
| ubuntu | 18.10 | noarch | busybox | < 1:1.27.2-2ubuntu4.1 | UNKNOWN |
| ubuntu | 19.04 | noarch | busybox | < 1:1.27.2-2ubuntu5 | UNKNOWN |
| ubuntu | 19.10 | noarch | busybox | < 1:1.27.2-2ubuntu5 | UNKNOWN |
| ubuntu | 20.04 | noarch | busybox | < 1:1.27.2-2ubuntu5 | UNKNOWN |
| ubuntu | 20.10 | noarch | busybox | < 1:1.27.2-2ubuntu5 | UNKNOWN |
| ubuntu | 21.04 | noarch | busybox | < 1:1.27.2-2ubuntu5 | UNKNOWN |
| ubuntu | 14.04 | noarch | busybox | < 1:1.21.0-1ubuntu1.4 | UNKNOWN |
| ubuntu | 16.04 | noarch | busybox | < 1:1.22.0-15ubuntu1.4 | UNKNOWN |
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.006 Low
EPSS
Percentile
77.5%