Executive Summary
Summary | |
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Title | kernel-rt security and bug fix update |
Informations | |||
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Name | RHSA-2019:1487 | First vendor Publication | 2019-06-17 |
Vendor | RedHat | Last vendor Modification | 2019-06-17 |
Severity (Vendor) | N/A | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C) | |||
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Cvss Base Score | 7.8 | Attack Range | Network |
Cvss Impact Score | 6.9 | Attack Complexity | Low |
Cvss Expoit Score | 10 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: An update for kernel-rt is now available for Red Hat Enterprise MRG 2. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * An integer overflow flaw was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment (SACK) segments. While processing SACK segments, the Linux kernel's socket buffer (SKB) data structure becomes fragmented. Each fragment is about TCP maximum segment size (MSS) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS). (CVE-2019-11477) * kernel: race condition in snd_seq_write() may lead to UAF or OOB-access (CVE-2018-7566) * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004) * Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478) * Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * update the MRG 2.5.z 3.10 kernel-rt sources (BZ#1711010) 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1535315 - CVE-2018-1000004 kernel: Race condition in sound system can lead to denial of service 1550142 - CVE-2018-7566 kernel: race condition in snd_seq_write() may lead to UAF or OOB-access 1711010 - update the MRG 2.5.z 3.10 kernel-rt sources 1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service 1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service 1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2019-1487.html |
CWE : Common Weakness Enumeration
% | Id | Name |
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33 % | CWE-362 | Race Condition |
17 % | CWE-770 | Allocation of Resources Without Limits or Throttling |
17 % | CWE-400 | Uncontrolled Resource Consumption ('Resource Exhaustion') |
17 % | CWE-190 | Integer Overflow or Wraparound (CWE/SANS Top 25) |
17 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2019-01-10 | Name : The remote device is affected by multiple vulnerabilities. File : juniper_space_jsa10917_184R1.nasl - Type : ACT_GATHER_INFO |
2018-09-27 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1296.nasl - Type : ACT_GATHER_INFO |
2018-09-18 | Name : The remote EulerOS Virtualization host is missing multiple security updates. File : EulerOS_SA-2018-1260.nasl - Type : ACT_GATHER_INFO |
2018-09-18 | Name : The remote EulerOS Virtualization host is missing multiple security updates. File : EulerOS_SA-2018-1245.nasl - Type : ACT_GATHER_INFO |
2018-08-31 | Name : The remote Virtuozzo host is missing multiple security updates. File : Virtuozzo_VZA-2018-063.nasl - Type : ACT_GATHER_INFO |
2018-08-20 | Name : The remote Virtuozzo host is missing multiple security updates. File : Virtuozzo_VZA-2018-055.nasl - Type : ACT_GATHER_INFO |
2018-08-15 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2018-2390.nasl - Type : ACT_GATHER_INFO |
2018-08-15 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2018-2384.nasl - Type : ACT_GATHER_INFO |
2018-05-29 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1132.nasl - Type : ACT_GATHER_INFO |
2018-05-23 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2018-142-01.nasl - Type : ACT_GATHER_INFO |
2018-05-03 | Name : The remote Debian host is missing a security update. File : debian_DLA-1369.nasl - Type : ACT_GATHER_INFO |
2018-05-02 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-4188.nasl - Type : ACT_GATHER_INFO |
2018-05-02 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-4187.nasl - Type : ACT_GATHER_INFO |
2018-04-27 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2018-1062.nasl - Type : ACT_GATHER_INFO |
2018-03-20 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1055.nasl - Type : ACT_GATHER_INFO |
2018-03-20 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1054.nasl - Type : ACT_GATHER_INFO |
2018-02-05 | Name : The remote Fedora host is missing a security update. File : fedora_2018-d09a73ce72.nasl - Type : ACT_GATHER_INFO |
2018-02-05 | Name : The remote Fedora host is missing a security update. File : fedora_2018-d82b617d6c.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2020-03-19 13:18:33 |
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