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Spear-Phishers Leverage Office 365 Ecosystem to Validate Stolen Creds in Real Time
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HiteshVectra
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HiteshVectra,
User Rank: Author
9/11/2020 | 12:56:58 PM
The balance between securing all things O365 and securing the hybrid cloud
To add to the list, we have seen an increase in attacks via Teams. The first being attackers using a compromised account to add an external account to be a member of an existing O365 Teams account.  The other is attackers tricking users into installing applications into Teams environments which may undermine existing security controls, such as multi-factor authentication (MFA), and enable malicious action on behalf of the authorizing user.  So while the threat landscape seems to increase on a daily basis, we see customers putting more focus on identifying and stopping attacks in their hybrid cloud since that is typically the destination of the breach. And while there are ways to secure the entire threat landscape, SOCs typically don't have the capacity to secure every single thing nor the hours in a day to do so. 


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CVE-2020-15208
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, when determining the common dimension size of two tensors, TFLite uses a `DCHECK` which is no-op outside of debug compilation modes. Since the function always returns the dimension of the first tensor, malicious attackers can ...
CVE-2020-15209
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr` buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one....
CVE-2020-15210
PUBLISHED: 2020-09-25
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, if a TFLite saved model uses the same tensor as both input and output of an operator, then, depending on the operator, we can observe a segmentation fault or just memory corruption. We have patched the issue in d58c96946b and ...
CVE-2020-15211
PUBLISHED: 2020-09-25
In TensorFlow Lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, saved models in the flatbuffer format use a double indexing scheme: a model has a set of subgraphs, each subgraph has a set of operators and each operator has a set of input/output tensors. The flatbuffer format uses indices f...
CVE-2020-15212
PUBLISHED: 2020-09-25
In TensorFlow Lite before versions 2.2.1 and 2.3.1, models using segment sum can trigger writes outside of bounds of heap allocated buffers by inserting negative elements in the segment ids tensor. Users having access to `segment_ids_data` can alter `output_index` and then write to outside of `outpu...