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Vulnerability Details : CVE-2021-20291

A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).
Publish Date : 2021-04-01 Last Update Date : 2021-06-02
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- CVSS Scores & Vulnerability Types

CVSS Score
7.1
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 667

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4154: container-tools:rhel8 security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20214154 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-20291

# Product Type Vendor Product Version Update Edition Language
1 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
3 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
4 Application Redhat Openshift Container Platform 4.0 * * * Version Details Vulnerabilities
5 Application Storage Project Storage * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Fedoraproject Fedora 2
Redhat Enterprise Linux 1
Redhat Openshift Container Platform 1
Storage Project Storage 1

- References For CVE-2021-20291

https://unit42.paloaltonetworks.com/cve-2021-20291/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X/
FEDORA FEDORA-2021-c56a213327
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL/
FEDORA FEDORA-2021-ec00da7faa
https://bugzilla.redhat.com/show_bug.cgi?id=1939485
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM/
FEDORA FEDORA-2021-83b3740389
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI/
FEDORA FEDORA-2021-a3703b9dc8

- Metasploit Modules Related To CVE-2021-20291

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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