Description
FlashAttention through 2.8.3.post1, fixed in commit 0816ef1, contains a symlink attack vulnerability in the download_and_copy() function within hopper/setup.py that extracts NVIDIA toolchain archives without validating symlinks or filtering tar members. A local attacker can pre-plant a symlink in the predictable cache directory to redirect extracted binaries to an attacker-chosen location, enabling arbitrary file write with victim privileges during build time.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Dao-AILab flash-attention
Default version status: unaffected
0 to ≤ 2.8.3.post1affected0816ef12f424c6ec94b057a72c275b14f6e6edb2unaffected
pkg:pypi/flash-attnReferences
- https://github.com/Dao-AILab/flash-attention/issues/2637 ↗
- https://github.com/Dao-AILab/flash-attention/pull/2702 ↗
- https://github.com/Dao-AILab/flash-attention/commit/0816ef12f424c6ec94b057a72c275b14f6e6edb2 ↗
- https://www.vulncheck.com/advisories/flashattention-symlink-attack-via-tarfile-extractall-in-hopper-setup-py ↗