Ubuntu.comUB:CVE-2017-16939CVE-2017-16939
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
0.4%
The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux
kernel before 4.13.11 allows local users to gain privileges or cause a
denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt
system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.
Notes
| Author | Note |
|---|---|
| sbeattie | priority is low for linux_precise/esm, as unprivileged user namespaces is not implemented there. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 17.10 | noarch | linux | < 4.13.0-19.22 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < 3.13.0-137.186 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-103.126 | UNKNOWN |
| ubuntu | 17.04 | noarch | linux | < 4.10.0-42.46 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1005.5 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1043.52 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.11.0-1016.16 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-euclid | < 4.4.0-9020.21 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.13.0-1002.5 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | < 4.10.0-42.46~16.04.1 | UNKNOWN |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5e2529a8f5ca8ee709288ecba3e68044df2
seclists.org/fulldisclosure/2017/Nov/40
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
blogs.securiteam.com/index.php/archives/3535
bugzilla.suse.com/show_bug.cgi?id=1069702
github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2
launchpad.net/bugs/cve/CVE-2017-16939
nvd.nist.gov/vuln/detail/CVE-2017-16939
security-tracker.debian.org/tracker/CVE-2017-16939
ubuntu.com/security/notices/USN-3507-1
ubuntu.com/security/notices/USN-3507-2
ubuntu.com/security/notices/USN-3508-1
ubuntu.com/security/notices/USN-3508-2
ubuntu.com/security/notices/USN-3509-1
ubuntu.com/security/notices/USN-3509-2
ubuntu.com/security/notices/USN-3510-1
ubuntu.com/security/notices/USN-3510-2
ubuntu.com/security/notices/USN-3511-1
www.cve.org/CVERecord?id=CVE-2017-16939
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
0.4%