CVE-2021-327605.0MediumCWE-668

CVE-2021-32760: Archive package allows chmod of file outside of unpack target directory

containerd

Vendor fix available · Affected: containerd · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.6%probability of exploitation in the next 30 days

76th percentile

050100

Higher than 76% of scored CVEs

5.0MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

containerd · containerd<= 1.4.7; >= 1.5.0, <= 1.5.3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Exposure of Resource to Wrong Sphere · Access Control
Vendor: containerd
Published: July 2021
Band: Possible (1 to 10%), July 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-32760 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.