CVE-2017-17805 (GCVE-0-2017-17805)

Vulnerability from cvelistv5 – Published: 2017-12-20 23:00 – Updated: 2024-08-05 20:59
VLAI
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2266 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2018:3083 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3617-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3619-2/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4082 vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3617-3/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/3632-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3620-2/ vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/102291 vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
https://www.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://www.debian.org/security/2017/dsa-4073 vendor-advisoryx_refsource_DEBIAN
http://git.kernel.org/cgit/linux/kernel/git/torva… x_refsource_CONFIRM
https://usn.ubuntu.com/3617-2/ vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/ecaaab56… x_refsource_CONFIRM
https://usn.ubuntu.com/3620-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3096 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3619-1/ vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:2473 vendor-advisoryx_refsource_REDHAT
Date Public
2017-12-20 00:00
Show details on NVD website
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          "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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      "product_status:fixed": "419",
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      "product_status:known_not_affected": "211",
      "product_status:recommended": "637",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2017-17805",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-17805.json",
      "version": "23"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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Vulnerability timeline

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