Cleartext Storage of Sensitive Information Affecting kernel-rt package, versions <0:3.10.0-327.22.2.rt56.230.el7_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    2.68% (91st percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-4599367
  • published 26 Jul 2021
  • disclosed 17 May 2016

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-327.22.2.rt56.230.el7_2 or higher.
This issue was patched in RHSA-2016:1301.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
Expand this section

Red Hat

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High