CVE-2017-17805
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- CVE-2017-17805
CVE Details
| Release Date: | 2017-12-20 | |
| Impact: | Moderate | What is this? |
Description
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.
See more information about CVE-2017-17805 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 7.8 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 5 (kernel-uek) | ELSA-2018-4301 | 2018-12-09 |
| Oracle Linux version 6 (dtrace-modules-3.8.13-118.28.1.el6uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 6 (dtrace-modules-3.8.13-118.29.1.el6uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 6 (kernel) | ELSA-2019-2473 | 2019-08-14 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4299 | 2018-12-06 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4301 | 2018-12-09 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 7 (dtrace-modules-3.8.13-118.28.1.el7uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 7 (dtrace-modules-3.8.13-118.29.1.el7uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 7 (kernel) | ELSA-2018-3083 | 2018-11-05 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4299 | 2018-12-06 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2018-0286 | 2018-12-07 |
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