Red Hat Enterprise Linux 7 Extras update for podman

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

podman (Red Hat package): 1.6.4-16.el7_8 - 1.6.4-18.el7_8

External links

http://access.redhat.com/errata/RHSA-2020:5056

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) Information disclosure

EUVDB-ID: #VU47117

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14370

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the way application processes environment variables with deprecated Varlink API or the Docker-compatible REST API. If multiple containers are created in a short duration, the environment variables from the first container gets leaked into subsequent containers. A remote user with control over the subsequent containers could use this flaw to gain access to sensitive information stored in such variables.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

podman (Red Hat package): 1.6.4-16.el7_8 - 1.6.4-18.el7_8

External links

http://access.redhat.com/errata/RHSA-2020:5056

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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