EUVD-2026-30482
GHSA-xv59-967r-8726
CVSS VectorNVD
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionNVD
CipherCtxRef::cipher_update, CipherCtxRef::cipher_update_vec, and symm::Crypter::update incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced.
This only impacts users using AES key-wrap-with-padding ciphers.
AnalysisAI
Heap buffer overflow in rust-openssl's AES key-wrap-with-padding cipher functions allows attackers to write up to 7 bytes past allocated buffer boundaries when processing non-multiple-of-8 plaintext inputs, enabling attacker-controlled heap corruption. Affected versions 0.10.0 through 0.10.78 are vulnerable when CipherCtxRef::cipher_update, CipherCtxRef::cipher_update_vec, or symm::Crypter::update are used with EVP_aes_128/192/256_wrap_pad ciphers.
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External POC / Exploit Code
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