CVE-2021-37692
MEDIUM5.5EPSS 0.03%Segfault on strings tensors with mistmatched dimensions, due to Go code
描述
### Impact Under certain conditions, Go code can trigger a segfault in string deallocation. For string tensors, `C.TF_TString_Dealloc` is called during garbage collection within a finalizer function. However, tensor structure isn't checked until encoding to avoid a performance penalty. The current method for dealloc assumes that encoding succeeded, but segfaults when a string tensor is garbage collected whose encoding failed (e.g., due to mismatched dimensions). To fix this, the call to set the finalizer function is deferred until `NewTensor` returns and, if encoding failed for a string tensor, deallocs are determined based on bytes written. ### Patches We have patched the issue in GitHub commit [8721ba96e5760c229217b594f6d2ba332beedf22](https://github.com/tensorflow/tensorflow/commit/8721ba96e5760c229217b594f6d2ba332beedf22) (merging [#50508](https://github.com/tensorflow/tensorflow/pull/50508)). The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, which is the other affected version. ### For more information Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions. ### Attribution This vulnerability has been reported externally via a [fixing PR](https://github.com/tensorflow/tensorflow/pull/50508).
受影響套件(7)
- Bitnami/tensorflow>= 2.5.0, < 2.6.0
- PyPI/tensorflow>= 2.5.0rc0, < 2.5.1
- PyPI/tensorflowfrom 0, < 8721ba96e5760c229217b594f6d2ba332beedf22 | >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- PyPI/tensorflow-cpufrom 0, < 8721ba96e5760c229217b594f6d2ba332beedf22 | >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- PyPI/tensorflow-cpu>= 2.5.0rc0, < 2.5.1
- PyPI/tensorflow-gpufrom 0, < 8721ba96e5760c229217b594f6d2ba332beedf22 | >= 2.3.0, < 2.3.4, >= 2.4.0, < 2.4.3
- PyPI/tensorflow-gpu>= 2.5.0rc0, < 2.5.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
參考連結(8)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-37692
- PATCHhttps://github.com/tensorflow/tensorflow
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-605.yaml
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-803.yaml
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-314.yaml
- WEBhttps://github.com/tensorflow/tensorflow/commit/8721ba96e5760c229217b594f6d2ba332beedf22
- WEBhttps://github.com/tensorflow/tensorflow/pull/50508
- WEBhttps://github.com/tensorflow/tensorflow/security/advisories/GHSA-cmgw-8vpc-rc59