Vulnerability in Storage Project
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).
EPSS: 0.016 (73.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Storage_project Storage
- Fedoraproject Fedora — versions 33, 34
- Redhat Enterprise_linux — versions 8.0
- Redhat Openshift_container_platform — versions 4.0
- N/a Containers/storage — versions containers/storage 1.28.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-20291?
- CVE-2021-20291 is a medium-severity vulnerability in Storage Project, classified under Improper Locking. CVSS score: 6.5/10. Published 2021-04-01.
- How severe is CVE-2021-20291?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-20291 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.