Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Titlelinux security update
Informations
NameDSA-4465First vendor Publication2019-06-17
VendorDebianLast vendor Modification2019-06-17
Severity (Vendor) N/ARevision1

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score9.3Attack RangeNetwork
Cvss Impact Score10Attack ComplexityMedium
Cvss Expoit Score8.6AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2019-3846, CVE-2019-10126

huangwen reported multiple buffer overflows in the Marvell wifi (mwifiex) driver, which a local user could use to cause denial of service or the execution of arbitrary code.

CVE-2019-5489

Daniel Gruss, Erik Kraft, Trishita Tiwari, Michael Schwarz, Ari Trachtenberg, Jason Hennessey, Alex Ionescu, and Anders Fogh discovered that local users could use the mincore() system call to obtain sensitive information from other processes that access the same memory-mapped file.

CVE-2019-9500, CVE-2019-9503

Hugues Anguelkov discovered a buffer overflow and missing access validation in the Broadcom FullMAC wifi driver (brcmfmac), which a attacker on the same wifi network could use to cause denial of service or the execution of arbitrary code.

CVE-2019-11477

Jonathan Looney reported that a specially crafted sequence of TCP selective acknowledgements (SACKs) allows a remotely triggerable kernel panic.

CVE-2019-11478

Jonathan Looney reported that a specially crafted sequence of TCP selective acknowledgements (SACKs) will fragment the TCP retransmission queue, allowing an attacker to cause excessive resource usage.

CVE-2019-11479

Jonathan Looney reported that an attacker could force the Linux kernel to segment its responses into multiple TCP segments, each of which contains only 8 bytes of data, drastically increasing the bandwidth required to deliver the same amount of data.

This update introduces a new sysctl value to control the minimal MSS (net.ipv4.tcp_min_snd_mss), which by default uses the formerly hard- coded value of 48. We recommend raising this to 536 unless you know that your network requires a lower value.

CVE-2019-11486

Jann Horn of Google reported numerous race conditions in the Siemens R3964 line discipline. A local user could use these to cause unspecified security impact. This module has therefore been disabled.

CVE-2019-11599

Jann Horn of Google reported a race condition in the core dump implementation which could lead to a use-after-free. A local user could use this to read sensitive information, to cause a denial of service (memory corruption), or for privilege escalation.

CVE-2019-11815

It was discovered that a use-after-free in the Reliable Datagram Sockets protocol could result in denial of service and potentially privilege escalation. This protocol module (rds) is not auto- loaded on Debian systems, so this issue only affects systems where it is explicitly loaded.

CVE-2019-11833

It was discovered that the ext4 filesystem implementation writes uninitialised data from kernel memory to new extent blocks. A local user able to write to an ext4 filesystem and then read the filesystem image, for example using a removable drive, might be able to use this to obtain sensitive information.

CVE-2019-11884

It was discovered that the Bluetooth HIDP implementation did not ensure that new connection names were null-terminated. A local user with CAP_NET_ADMIN capability might be able to use this to obtain sensitive information from the kernel stack.

For the stable distribution (stretch), these problems have been fixed in version 4.9.168-1+deb9u3.

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux

Original Source

Url : http://www.debian.org/security/2019/dsa-4465

CWE : Common Weakness Enumeration

%idName
27 %CWE-362Race Condition
18 %CWE-400Uncontrolled Resource Consumption ('Resource Exhaustion')
18 %CWE-200Information Exposure
18 %CWE-119Failure to Constrain Operations within the Bounds of a Memory Buffer
9 %CWE-190Integer Overflow or Wraparound (CWE/SANS Top 25)
9 %CWE-77Improper Sanitization of Special Elements used in a Command ('Command Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application44
Application45
Application45
Application45
Application45
Application45
Application45
Application45
Application44
Application45
Application45
Application45
Application44
Application2
Application1
Application1
Application1
Application1
Application1
Application1
Application1
Os6
Os3248
Os4
Os2
Os2
Os1

Alert History

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0
1
DateInformations
2019-06-19 12:12:56
  • Multiple Updates
2019-06-17 21:18:38
  • First insertion