fkie_cve-2017-17805
Vulnerability from fkie_nvd
Published
2017-12-20 23:29
Modified
2024-11-21 03:18
Severity ?
Summary
The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| debian | debian_linux | 8.0 | |
| debian | debian_linux | 9.0 | |
| opensuse | leap | 42.2 | |
| opensuse_project | leap | 42.3 | |
| suse | linux_enterprise_desktop | 12 | |
| suse | linux_enterprise_desktop | 12 | |
| suse | linux_enterprise_server | 11 | |
| suse | linux_enterprise_server | 11 | |
| suse | linux_enterprise_server | 12 | |
| suse | linux_enterprise_server | 12 | |
| suse | linux_enterprise_server_for_raspberry_pi | 12 | |
| canonical | ubuntu_linux | 12.04 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 17.10 |
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"value": "The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable."
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"lang": "es",
"value": "El algoritmo de cifrado Salsa20 en el kernel de Linux en versiones anteriores a la 4.14.8 no maneja correctamente las entradas de longitud cero, lo que permite a un atacante local capaz de utilizar la interfaz skcipher basada en AF_ALG (CONFIG_CRYPTO_USER_API_SKCIPHER) provocar una denegaci\u00f3n de servicio (liberaci\u00f3n de memoria no inicializada y fallo del kernel) o provocar otro impacto no especificado ejecutando una secuencia manipulada de llamadas al sistema que utilizan la API blkcipher_walk. Tanto la implementaci\u00f3n gen\u00e9rica (crypto/salsa20_generic.c) como la implementaci\u00f3n x86 (arch/x86/crypto/salsa20_glue.c) de Salsa20 eran vulnerables."
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"id": "CVE-2017-17805",
"lastModified": "2024-11-21T03:18:42.537",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.