GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file's name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains '..'" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in which "tar xf" is run more than once (e.g., when installing a package can automatically install two dependencies that are set up as untrusted tarballs instead of official packages).
References
Link | Resource |
---|---|
https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md | Exploit Third Party Advisory |
https://www.gnu.org/software/tar/ | Product Release Notes |
Configurations
History
17 Jul 2025, 13:09
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:* | |
References | () https://github.com/i900008/vulndb/blob/main/Gnu_tar_vuln.md - Exploit, Third Party Advisory | |
References | () https://www.gnu.org/software/tar/ - Product, Release Notes | |
First Time |
Gnu
Gnu tar |
15 Jul 2025, 13:14
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2025-07-11 17:15
Updated : 2025-07-17 13:09
NVD link : CVE-2025-45582
Mitre link : CVE-2025-45582
CVE.ORG link : CVE-2025-45582
JSON object : View
Products Affected
gnu
- tar
CWE
CWE-24
Path Traversal: '../filedir'