Snap7 through 1.4.3 Out-of-Bounds Write via BRecv and CheckAsBRecvCompletion
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| davenardella | snap7 | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Snap7 Project | Snap7 |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.418% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Snap7 through 1.4.3 contains an out-of-bounds write vulnerability in the passive partner that allows a malicious active partner to overflow application buffers by declaring an unvalidated BSend total length. Attackers connecting from the configured peer address can declare up to 65535 bytes and send a short fragment, causing BRecv to memcpy past the buffer and crash or corrupt SCADA, HMI or gateway processes. | |
| Title | Snap7 through 1.4.3 Out-of-Bounds Write via BRecv and CheckAsBRecvCompletion | |
| First Time appeared |
Snap7 Project
Snap7 Project snap7 |
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| Weaknesses | CWE-787 | |
| CPEs | cpe:2.3:a:snap7_project:snap7:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Snap7 Project
Snap7 Project snap7 |
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| References |
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| Metrics |
cvssV3_1
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