// For flags

CVE-2016-3707

kernel-rt: Sending SysRq command via ICMP echo request

Severity Score

8.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La función icmp_check_sysrq en net/ipv4/icmp.c en los kernel.org projects/rt patches para el kernel de Linux, tal como se utiliza en el paquete kernel-rt en versiones anteriores a 3.10.0-327.22.1 en Red Hat Enterprise Linux for Real Time 7 y otros productos, permite a atacantes remotos ejecutar comandos SysRq a través de paquetes ICMP Echo Request manipulados, como demuestra un ataque de fuerza bruta para descubrir una cookie, o un ataque que ocurra después de leer el archivo local icmp_echo_sysrq.

A flaw was found in the way the realtime kernel processed specially crafted ICMP echo requests. A remote attacker could use this flaw to trigger a sysrql function based on values in the ICMP packet, allowing them to remotely restart the system. Note that this feature is not enabled by default and requires elevated privileges to be configured.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-03-30 CVE Reserved
  • 2016-06-24 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-284: Improper Access Control
  • CWE-312: Cleartext Storage of Sensitive Information
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel-rt
Search vendor "Linux" for product "Linux Kernel-rt"
 <= 3.10.0
Search vendor "Linux" for product "Linux Kernel-rt" and version " <= 3.10.0"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux For Real Time
Search vendor "Redhat" for product "Enterprise Linux For Real Time"
 7
Search vendor "Redhat" for product "Enterprise Linux For Real Time" and version "7"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux For Real Time For Nfv
Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv"
 7
Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv" and version "7"
-
Affected
Novell
Search vendor "Novell"
 Suse Linux Enterprise Real Time Extension
Search vendor "Novell" for product "Suse Linux Enterprise Real Time Extension"
 12.0
Search vendor "Novell" for product "Suse Linux Enterprise Real Time Extension" and version "12.0"
sp1
Affected