Ubuntu.comUB:CVE-2016-3707CVE-2016-3707
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.027 Low
EPSS
Percentile
90.3%
The icmp_check_sysrq function in net/ipv4/icmp.c in the kernel.org
projects/rt patches for the Linux kernel, as used in the kernel-rt package
before 3.10.0-327.22.1 in Red Hat Enterprise Linux for Real Time 7 and
other products, allows remote attackers to execute SysRq commands via
crafted ICMP Echo Request packets, as demonstrated by a brute-force attack
to discover a cookie, or an attack that occurs after reading the local
icmp_echo_sysrq file.
Notes
| Author | Note |
|---|---|
| sbeattie | only affects kernels with PREEMPT_RT applied and enabled, which is not the case in Ubuntu kernels. |
References
lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
www.openwall.com/lists/oss-security/2016/05/17/1
access.redhat.com/errata/RHSA-2016:1301
access.redhat.com/errata/RHSA-2016:1341
bugzilla.redhat.com/show_bug.cgi?id=1327484
launchpad.net/bugs/cve/CVE-2016-3707
lwn.net/Articles/448790/
nvd.nist.gov/vuln/detail/CVE-2016-3707
security-tracker.debian.org/tracker/CVE-2016-3707
www.cve.org/CVERecord?id=CVE-2016-3707
Related
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.027 Low
EPSS
Percentile
90.3%