CVE-2021-25741GO-2022-0910GHSA-F5F7-6478-QM6P
Symlink Exchange Can Allow Host Filesystem Access
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.19.15, 1.20.11, 1.21.5, 1.22.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 3 proofs of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Kubernetes Kubernetes
through 1.19.14; through 1.20.10; through 1.21.4; through 1.22.1
- k8s.io/kubernetesGo
fixed in 1.19.15; From 1.20.0 · fixed in 1.20.11; From 1.21.0 · fixed in 1.21.5; From 1.22.0 · fixed in 1.22.2
- k8s.io/kubernetesGo
fixed in 1.19.15
- k8s.io/kubernetesGo
From 1.20.0 · fixed in 1.20.11
- k8s.io/kubernetesGo
From 1.21.0 · fixed in 1.21.5
- k8s.io/kubernetesGo
From 1.22.0 · fixed in 1.22.2