CVE-2024-32020
Description
A vulnerability was found in Git. This flaw allows an unauthenticated attacker to place a specialized repository on their target's local system. For performance reasons, Git uses hardlinks when cloning a repository located on the same disk. However, if the repo being cloned is owned by a different user, this can introduce a security risk. At any time in the future, the original repo owner could rewrite the hardlinked files in the cloned user's repo.
Statement
This vulnerability presents a Low severity issue due to its contextual constraints and limited impact potential. Primarily affecting local Git repository clones where source and target repositories reside on the same disk, the risk arises only when the source repository is owned by a different, potentially untrusted user. This scenario necessitates specific conditions for exploitation, such as shared access to the disk among multiple users. Moreover, the impact is localized to the affected repositories and does not extend to the broader system or network. While the integrity of the target repository may be compromised if the untrusted user modifies linked files, the scope of influence is contained within the repository structure.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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 | 3.9 | 3.3 | 3.9 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | High | Low | High |
| Privileges Required | Low | None | Low |
| User Interaction | Required | Required | Required |
| Scope | Changed | Unchanged | Changed |
| Confidentiality | None | None | None |
| Integrity Impact | Low | Low | Low |
| Availability Impact | Low | None | Low |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L
NVD: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
cve.org: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L
Understanding the Weakness (CWE)
Confidentiality,Integrity
Technical Impact: Read Files or Directories; Modify Files or Directories
Frequently Asked Questions
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