Ubuntu.comUB:CVE-2018-20511CVE-2018-20511
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%
An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl
function in drivers/net/appletalk/ipddp.c allows local users to obtain
sensitive kernel address information by leveraging CAP_NET_ADMIN to read
the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
Notes
| Author | Note |
|---|---|
| tyhicks | An attacker needs root privileges (the CAP_NET_ADMIN capability) to leverage this flaw. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < 4.15.0-58.64 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-139.165 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1047.49 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1034.37 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1072.82 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1047.49~16.04.1 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure | < 4.18.0-1011.11~18.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1055.60 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure-edge | < 4.18.0-1011.11~18.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure-edge | < 4.15.0-1055.60 | UNKNOWN |
References
blog.infosectcbr.com.au/2018/09/linux-kernel-infoleaks.html
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9824dfae5741275473a23a7ed5756c7b6efacc9d
launchpad.net/bugs/cve/CVE-2018-20511
nvd.nist.gov/vuln/detail/CVE-2018-20511
security-tracker.debian.org/tracker/CVE-2018-20511
ubuntu.com/security/notices/USN-4094-1
ubuntu.com/security/notices/USN-4118-1
www.cve.org/CVERecord?id=CVE-2018-20511
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%