CVE-2021-33194
Description
A flaw was found in golang. An attacker can craft an input to ParseFragment within parse.go that would cause it to enter an infinite loop and never return. The greatest threat to the system is of availability.
Statement
Red Hat Developer Tools go-toolset-1.14-golang not affected because the vulnerable code is not shipped.
This vulnerability within golang and buildah shipped with RHEL-7 are out of support scope. For more information on Red Hat's support scope, visit: https://access.redhat.com/support/policy/updates/errata
For RHEL-8's go-toolset:rhel8/golang, container-tools:1.0/buildah, container-tools:2.0/buildah, and container-tools:rhel8/buildah, the affected function is only used in e2e tests.
For RHEL-9's golang and buildah, the affected function is only used in e2e tests.
Red Hat Openshift Container Storage has dependencies with the affected code, however, low priority trackers were filed as the vulnerable code is not shipped or used.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | 7.5 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Amplification
An infinite loop will cause unexpected consumption of resources, such as CPU cycles or memory. The software's operation may slow down, or cause a long time to respond.
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