| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5. |
| Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally. |
| Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally. |
| Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code over a network. |
| Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network. |
| Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally. |
| Improper certificate validation in Azure Local allows an unauthorized attacker to execute code over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally. |
| Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally. |
| Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. |
| Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. |
| Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally. |
| Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network. |
| Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally. |
| External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally. |
| Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally. |
| Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally. |
