Red Hat Enterprise Linux 7 Extras update for skopeo

1) Use-after-free

EUVDB-ID: #VU25501

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8945

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error, as demonstrated by use for container image pulls by Docker or CRI-O. A remote attacker can crash the target system, or cause potential code execution for Go applications that use this library under certain conditions during GPG signature verification.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

skopeo (Red Hat package): 0.1.40-2.el7

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux for IBM z Systems: 7

Red Hat Enterprise Linux Workstation: 7

Red Hat Enterprise Linux Server: 7

External links

http://access.redhat.com/errata/RHSA-2020:1230

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.