Meta fairseq2 checkpoint loader deserialization flaw allows RCE (ZDI-26-939)
Original title: ZDI-26-939: (0Day) Meta fairseq2 FileCheckpointManager _load_state_dict Deserialization of Untrusted Data Remote Code Execution Vulnerability
FileCheckpointManager _load_state_dict can run code from untrusted data; ZDI scores it 7.8.
ZDI published ZDI-26-939 as a zero-day in Meta fairseq2. Deserialization of untrusted data in FileCheckpointManager _load_state_dict can execute arbitrary code if a user visits a malicious page or opens a malicious file. ZDI assigned CVSS 7.8. The snippet lists no versions, fix, or CVE.
Unconfirmed: The advisory does not say whether the flaw is exploited or patched.
- The issue is in fairseq2 FileCheckpointManager _load_state_dict.
- A user must visit a malicious page or open a file.
- ZDI assigned CVSS 7.8 and calls it a zero-day.
- No CVE or fixed version is stated.
Impact: Remote code execution via untrusted checkpoint data
| Product | Affected |
|---|---|
| Meta fairseq2 | — |
- Vendors
- Meta
- Products
- fairseq2
- Organizations
- Zero Day Initiative
From the original article
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Meta fairseq2. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.
zerodayinitiative.com
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