CVE-2021-20291
First published: Tue Mar 16 2021(Updated: )
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).
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <1.28.1 | ||
| Redhat Openshift Container Platform | =4.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| redhat/podman | <2:4.2.0-3.el9 | 2:4.2.0-3.el9 |
| redhat/skopeo | <2:1.9.2-1.el9 | 2:1.9.2-1.el9 |
| redhat/buildah | <1:1.27.0-2.el9 | 1:1.27.0-2.el9 |
| redhat/cri-o | <0:1.20.2-6.rhaos4.7.gitf1d5201.el8 | 0:1.20.2-6.rhaos4.7.gitf1d5201.el8 |
| redhat/openshift | <0:4.7.0-202104090228.p0.git.97111.77863f8.el8 | 0:4.7.0-202104090228.p0.git.97111.77863f8.el8 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-20291 https://nvd.nist.gov/vuln/detail/CVE-2021-20291 https://unit42.paloaltonetworks.com/cve-2021-20291/
- https://bugzilla.redhat.com/show_bug.cgi?id=1939485
- https://access.redhat.com/errata/RHBA-2022:0348
- https://access.redhat.com/errata/RHSA-2021:4154
- https://access.redhat.com/errata/RHSA-2022:7954
- https://access.redhat.com/errata/RHSA-2022:7955
- https://access.redhat.com/errata/RHSA-2022:8008
- https://access.redhat.com/errata/RHSA-2021:1150
- https://access.redhat.com/errata/RHSA-2021:2438
- https://access.redhat.com/security/cve/cve-2021-20291
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM/
- https://unit42.paloaltonetworks.com/cve-2021-20291/
- https://github.com/containers/storage/commit/306fcabc964470e4b3b87a43a8f6b7d698209ee1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1945639
- https://github.com/containers/storage/blob/master/layers.go#L1416
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947288
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947289
- https://github.com/containers/storage/blob/e9989a949a0d2c32fa82d3ff1076e33cfec58cb9/layers.go#L1332
- https://github.com/konveyor/openshift-migration-plugin/blob/cbc29cae77bd1046165166d9f5c2c55488d24e2f/Gopkg.lock#L209
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X/
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/author
- agent/weakness
- agent/severity
- agent/references
- agent/remedy
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-20291
- agent/software-canonical-lookup
- agent/tags
- agent/event
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/storage project
- vendor/redhat
- canonical/redhat openshift container platform
- version/redhat openshift container platform/4.0
- canonical/redhat enterprise linux
- version/redhat enterprise linux/8.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34