Affected: Bitnami: helm

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to NULL Pointer Dereference in the_chartutil_ package that can cause a segmentation violation. The _chartutil_ package contains a parser that loads a JSON Schema validation file. For example, the Helm client when rendering a chart will validate its values with the schema file. The _chartutil_ package parses the schema file and loads it into structures Go can work with. Some schema files can cause array data structures to be created causing a memory violation. Applications that use the _chartutil_ package in the Helm SDK to parse a schema file can suffer a Denial of Service when that input causes a panic that cannot be recovered from. Helm is not a long running service so the panic will not affect future uses of the Helm client. This issue has been patched in 3.10.3. SDK users can validate schema files that are correctly formatted before passing them to the _chartutil_ functions.

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to NULL Pointer Dereference in the_chartutil_ package that can cause a segmentation violation. The _chartutil_ package contains a parser that loads a JSON Schema validation file. For example, the Helm client when rendering a chart will validate its values with the schema file. The _chartutil_ package parses the schema file and loads it into structures Go can work with. Some schema files can cause array data structures to be created causing a memory violation. Applications that use the _chartutil_ package in the Helm SDK to parse a schema file can suffer a Denial of Service when that input causes a panic that cannot be recovered from. Helm is not a long running service so the panic will not affect future uses of the Helm client. This issue has been patched in 3.10.3. SDK users can validate schema files that are correctly formatted before passing them to the _chartutil_ functions.

Affected: Go: helm.sh/helm/v3

Fuzz testing, by Ada Logics and sponsored by the CNCF, identified input to functions in the `_chartutil_` package that can cause a segmentation violation. Applications that use functions from the `_chartutil_` package in the Helm SDK can have a Denial of Service attack when they use this package and it panics.

### Impact

The `_chartutil_` package contains a parser that loads a JSON Schema validation file. For example, the Helm client when rendering a chart will validate its values with the schema file. The `_chartutil_` package parses the schema file and loads it into structures Go can work with. Some schema files can cause array data structures to be created causing a memory violation.

Applications that use the `_chartutil_` package in the Helm SDK to parse a schema file can suffer a Denial of Service when that input causes a panic that cannot be recovered from.

The Helm Client will panic with a schema file that causes a memory violation panic. Helm is not a long running service so the panic will not affect future uses of the Helm client.

### Patches

This issue has been resolved in 3.10.3.

### Workarounds

SDK users can validate schema files that are correctly formatted before passing them to the `_chartutil_` functions.

### For more information

Helm's security policy is spelled out in detail in our [SECURITY](https://github.com/helm/community/blob/master/SECURITY.md) document.

### Credits

Disclosed by Ada Logics in a fuzzing audit sponsored by CNCF.

helm-3.10.3-2.1 on GA media

go-yaml: Denial of Service in go-yaml goutils: RandomAlphaNumeric and CryptoRandomAlphaNumeric are not as random as they should be mongo-go-driver: specific cstrings input may not be properly validated golang: out-of-bounds read in golang.org/x/text/language leads to DoS prometheus/client_golang: Denial of service using InstrumentHandlerCounter helm: Denial of service through through repository index file helm: Denial of service through schema file golang: crash in a golang.org/x/crypto/ssh server vault: insufficient certificate revocation list checking golang: net/http: excessive memory growth in a Go server accepting HTTP/2 requests x/net/http2/h2c: request smuggling golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding golang: crypto/tls: large handshake records may cause panics golang: net/http, mime/multipart: denial of service from excessive resource consumption exporter-toolkit: authentication bypass via cache poisoning vault: Vault’s Microsoft SQL Database Storage Backend Vulnerable to SQL Injection Via Configuration File hashicorp/vault: Vault’s PKI Issuer Endpoint Did Not Correctly Authorize Access to Issuer Metadata hashicorp/vault: Cache-Timing Attacks During Seal and Unseal Operations helm: getHostByName Function Information Disclosure containerd: Supplementary groups are not set up properly runc: Rootless runc makes `/sys/fs/cgroup` writable runc: volume mount race condition (regression of CVE-2019-19921) runc: AppArmor can be bypassed when `/pro…

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um einen Denial of Service Angriff durchzuführen.