Red Hat OpenShift Container Storage 4 update for mcg



Published: 2020-12-21
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-14040
CVE-2020-15586
CVE-2020-16845
CWE-ID CWE-835
CWE-362
Exploitation vector Network
Public exploit N/A
Vulnerable software
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tini (Red Hat package)
Operating systems & Components / Operating system package or component

mcg (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Infinite loop

EUVDB-ID: #VU34248

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14040

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

tini (Red Hat package): before 0.18.0-5.el8

mcg (Red Hat package): before 5.6.0-39.2279a46.5.6.el8

External links

http://access.redhat.com/errata/RHSA-2020:5606


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Race condition

EUVDB-ID: #VU31891

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15586

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler. A remote attacker can exploit the race and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

tini (Red Hat package): before 0.18.0-5.el8

mcg (Red Hat package): before 5.6.0-39.2279a46.5.6.el8

External links

http://access.redhat.com/errata/RHSA-2020:5606


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Infinite loop

EUVDB-ID: #VU45699

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16845

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop in "ReadUvarint" and "ReadVarint" in "encoding/binary". A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

tini (Red Hat package): before 0.18.0-5.el8

mcg (Red Hat package): before 5.6.0-39.2279a46.5.6.el8

External links

http://access.redhat.com/errata/RHSA-2020:5606


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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