이름: UNIX Hard Link
The product, when opening a file or directory, does not sufficiently account for when the name is associated with a hard link to a target that is outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
일반 정보
취약점 도입 방식
Implementation적용 가능한 플랫폼
언어
클래스: Not Language-Specific (Undetermined)운영 체제
클래스: Unix (Undetermined)기술
클래스: Not Technology-Specific (Undetermined)일반적인 결과
| 범위 | 영향 | 가능성 |
|---|---|---|
| Confidentiality Integrity | Read Files or Directories, Modify Files or Directories 참고: An attacker can escalate their privileges if a file used by a privileged program is replaced with a hard link to a sensitive file (e.g. /etc/passwd). When the process opens the file, the attacker can assume the privileges of that process. |
관찰된 예시
| 참고 자료 | 설명 |
|---|---|
CVE-2001-1494 | Hard link attack, file overwrite; interesting because program checks against soft links |
CVE-2002-0793 | Hard link and possibly symbolic link following vulnerabilities in embedded operating system allow local users to overwrite arbitrary files. |
CVE-2003-0578 | Server creates hard links and unlinks files as root, which allows local users to gain privileges by deleting and overwriting arbitrary files. |
CVE-1999-0783 | Operating system allows local users to conduct a denial of service by creating a hard link from a device special file to a file on an NFS file system. |
CVE-2004-1603 | Web hosting manager follows hard links, which allows local users to read or modify arbitrary files. |
CVE-2004-1901 | Package listing system allows local users to overwrite arbitrary files via a hard link attack on the lockfiles. |
CVE-2005-0342 | The Finder in Mac OS X and earlier allows local users to overwrite arbitrary files and gain privileges by creating a hard link from the .DS_Store file to an arbitrary file. |
CVE-2005-1111 | Hard link race condition |
CVE-2021-21272 | "Zip Slip" vulnerability in Go-based Open Container Initiative (OCI) registries product allows writing arbitrary files outside intended directory via symbolic links or hard links in a gzipped tarball. |
CVE-2003-1366 | setuid root tool allows attackers to read secret data by replacing a temp file with a hard link to a sensitive file |
잠재적 완화 방법
Phases : Architecture and Design취약점 매핑 메모
근거 : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.댓글 : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
참고 자료
REF-62
The Art of Software Security AssessmentMark Dowd, John McDonald, Justin Schuh.
제출
| 이름 | 조직 | 날짜 | 출시일 | Version |
|---|---|---|---|---|
| PLOVER | Draft 3 |
수정 사항
| 이름 | 조직 | 날짜 | 댓글 |
|---|---|---|---|
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Relationships, Taxonomy_Mappings, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Observed_Examples, References, Relationships | |
| CWE Content Team | MITRE | updated Potential_Mitigations | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Causal_Nature, Observed_Examples, Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Research_Gaps | |
| CWE Content Team | MITRE | updated Observed_Examples | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Observed_Examples | |
| CWE Content Team | MITRE | updated Observed_Examples | |
| CWE Content Team | MITRE | updated Affected_Resources, Functional_Areas | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Common_Consequences, Description |
