CVE-2017-17805 | BDVDB-2026-94359 Detail
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://access.redhat.com/errata/RHSA-2018:3083
- https://usn.ubuntu.com/3617-1/
- https://usn.ubuntu.com/3619-2/
- https://www.debian.org/security/2018/dsa-4082
- https://usn.ubuntu.com/3617-3/
- https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- https://usn.ubuntu.com/3632-1/
- https://usn.ubuntu.com/3620-2/
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
- http://www.securityfocus.com/bid/102291
- https://access.redhat.com/errata/RHSA-2018:2948
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html
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- https://www.debian.org/security/2017/dsa-4073
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e
- https://usn.ubuntu.com/3617-2/
- https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e
- https://usn.ubuntu.com/3620-1/
- https://access.redhat.com/errata/RHSA-2018:3096
- https://usn.ubuntu.com/3619-1/
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
- https://access.redhat.com/errata/RHSA-2019:2473
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.