MediumVulnerability
CVE-2021-37686: TensorFlow Lite strided slice infinite loop via crafted model
- Source
- NVD(opens in a new tab)
- Identifier
- CVE-2021-37686
- Published
- Record updated
- Affected
- tensorflow >= 2.6.0rc0, < 2.6.0rc2
- tensorflow-cpu >= 2.6.0rc0, < 2.6.0rc2
- tensorflow-gpu >= 2.6.0rc0, < 2.6.0rc2
- Fixed in
- 2.6.0rc2
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
- EPSS
- 0.2%
Summary
CVE-2021-37686 affects TensorFlow Lite's strided slice implementation, which contains a logic bug introduced with new support for ellipsis in axis definition. An attacker can craft a model where `ellipsis_end_idx` is smaller than `i`, so the inner loop never increments `i` and the `continue` statement skips the outer loop's preincrement, causing an infinite loop. TensorFlow 2.6.0 is the only affected version.
Mitigation
We have patched the issue in GitHub commit dfa22b348b70bb89d6d6ec0ff53973bacb4f4695.
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