CVE-2026-33056
MEDIUM
5,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
Description
AI Translation Available
tar-rs is a tar archive reading/writing library for Rust. In versions 0.4.44 and below, when unpacking a tar archive, the tar crate's unpack_dir function uses fs::metadata() to check whether a path that already exists is a directory. Because fs::metadata() follows symbolic links, a crafted tarball containing a symlink entry followed by a directory entry with the same name causes the crate to treat the symlink target as a valid existing directory — and subsequently apply chmod to it. This allows an attacker to modify the permissions of arbitrary directories outside the extraction root. This issue has been fixed in version 0.4.45.
61
UNIX Symbolic Link (Symlink) Following
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Potential Impacts:
Read Files Or Directories
Modify Files Or Directories
Applicable Platforms
All platforms may be affected
https://github.com/alexcrichton/tar-rs/commit/17b1fd84e632071cb8eef9d3709bf347b…
https://github.com/alexcrichton/tar-rs/security/advisories/GHSA-j4xf-2g29-59ph