6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.005 Low
EPSS
Percentile
76.5%
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).
CPE | Name | Operator | Version |
---|---|---|---|
github.com/containers/storage | lt | 1.28.1 |
bugzilla.redhat.com/show_bug.cgi?id=1939485
github.com/containers/storage
github.com/containers/storage/commit/306fcabc964470e4b3b87a43a8f6b7d698209ee1
github.com/containers/storage/pull/860
lists.fedoraproject.org/archives/list/[email protected]/message/R5D7XL7FL24TWFMGQ3K2S72EOUSLZMKL
lists.fedoraproject.org/archives/list/[email protected]/message/SPYOHNG2Q7DCAQZMGYLMENLKALGDLG3X
lists.fedoraproject.org/archives/list/[email protected]/message/WX24EITRXVHDM5M223BVTJA2ODF2FSHI
lists.fedoraproject.org/archives/list/[email protected]/message/ZNMB7O2UIXE34PGSCSOULGHPX5LIJBMM
nvd.nist.gov/vuln/detail/CVE-2021-20291
pkg.go.dev/vuln/GO-2021-0100
unit42.paloaltonetworks.com/cve-2021-20291
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.005 Low
EPSS
Percentile
76.5%