rust-openssl up to 0.10.78 Crypter heap-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in rust-openssl up to 0.10.78. Affected by this issue is the function CipherCtxRef::cipher_update/CipherCtxRef::cipher_update_vec/symm::Crypter. The manipulation results in heap-based overflow. This vulnerability is reported as CVE-2026-44662. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in rust-openssl up to 0.10.78. It has been classified as critical. Affected is the function CipherCtxRef::cipher_update/CipherCtxRef::cipher_update_vec/symm::Crypter. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.0 to before 0.10.79, 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. This vulnerability is fixed in 0.10.79.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-44662 since 05/07/2026. The exploitability is told to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/16/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314942 (Linux Distros Unpatched Vulnerability : CVE-2026-44662), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.10.79 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (314942) and EUVD (EUVD-2026-30482). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Encryption Software

Name

• rust-openssl

Version

• 0.10.0
• 0.10.1
• 0.10.2
• 0.10.3
• 0.10.4
• 0.10.5
• 0.10.6
• 0.10.7
• 0.10.8
• 0.10.9
• 0.10.10
• 0.10.11
• 0.10.12
• 0.10.13
• 0.10.14
• 0.10.15
• 0.10.16
• 0.10.17
• 0.10.18
• 0.10.19
• 0.10.20
• 0.10.21
• 0.10.22
• 0.10.23
• 0.10.24
• 0.10.25
• 0.10.26
• 0.10.27
• 0.10.28
• 0.10.29
• 0.10.30
• 0.10.31
• 0.10.32
• 0.10.33
• 0.10.34
• 0.10.35
• 0.10.36
• 0.10.37
• 0.10.38
• 0.10.39
• 0.10.40
• 0.10.41
• 0.10.42
• 0.10.43
• 0.10.44
• 0.10.45
• 0.10.46
• 0.10.47
• 0.10.48
• 0.10.49
• 0.10.50
• 0.10.51
• 0.10.52
• 0.10.53
• 0.10.54
• 0.10.55
• 0.10.56
• 0.10.57
• 0.10.58
• 0.10.59
• 0.10.60
• 0.10.61
• 0.10.62
• 0.10.63
• 0.10.64
• 0.10.65
• 0.10.66
• 0.10.67
• 0.10.68
• 0.10.69
• 0.10.70
• 0.10.71
• 0.10.72
• 0.10.73
• 0.10.74
• 0.10.75
• 0.10.76
• 0.10.77
• 0.10.78

Support

• end of life (old version)

Website

• Product: https://github.com/rust-openssl/rust-openssl/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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