Red Hat update for container-tools:rhel8



Published: 2019-12-17
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2019-16884
CVE-2019-9512
CVE-2019-9514
CWE-ID CWE-264
CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU22482

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-16884

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect checking of the mount targets in libcontainer/rootfs_linux.go in runc. A local user can bypass AppArmor restrictions and perform unauthorized actions on the system, as demonstrated by overwriting the /proc directory with a malicious Doker image.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:4269

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Resource exhaustion

EUVDB-ID: #VU20200

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2019-9512

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of user-supplied input when processing HTTP/2 requests. A remote attacker can send specially crafted HTTP packets to the affected system trigger resource exhaustion and perform a denial of service (DoS) attack.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:4269

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Resource exhaustion

EUVDB-ID: #VU20201

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2019-9514

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of user-supplied input when processing HTTP/2 requests. A remote attacker can send specially crafted HTTP packets to the affected system trigger resource exhaustion and perform a denial of service (DoS) attack.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:4269

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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