ID CVE-2016-3707
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:o:linux:linux_kernel-rt:3.10.0:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel-rt:3.10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_for_real_time:7:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_for_real_time:7:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:7:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:7:*:*:*:*:*:*:*
  • cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12.0:sp1:*:*:*:*:*:*
    cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12.0:sp1:*:*:*:*:*:*
CVSS
Base: 6.8 (as of 28-11-2016 - 20:12)
Impact:
Exploitability:
CWE CWE-284
CAPEC
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
cvss-vector via4 AV:N/AC:M/Au:N/C:P/I:P/A:P
redhat via4
advisories
  • rhsa
    id RHSA-2016:1301
  • rhsa
    id RHSA-2016:1341
rpms
  • kernel-rt-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-debug-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-debug-devel-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-debug-kvm-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-devel-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-doc-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-kvm-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-trace-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-trace-devel-0:3.10.0-327.22.2.rt56.230.el7_2
  • kernel-rt-trace-kvm-0:3.10.0-327.22.2.rt56.230.el7_2
refmap via4
confirm https://bugzilla.redhat.com/show_bug.cgi?id=1327484
mlist [oss-security] 20160517 CVE-2016-3707 : kernel-rt - Sending SysRq command via ICMP echo request
suse
  • SUSE-SU-2016:1764
  • SUSE-SU-2016:1937
  • SUSE-SU-2016:1985
Last major update 28-11-2016 - 20:12
Published 27-06-2016 - 10:59
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