Detections
Analytics
CVE-2017-17805
high
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.
References
https://www.debian.org/security/2018/dsa-4082
https://www.debian.org/security/2017/dsa-4073
https://usn.ubuntu.com/3632-1/
https://usn.ubuntu.com/3620-2/
https://usn.ubuntu.com/3620-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3617-3/
https://usn.ubuntu.com/3617-2/
https://usn.ubuntu.com/3617-1/
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
https://access.redhat.com/errata/RHSA-2019:2473
https://access.redhat.com/errata/RHSA-2018:3096
https://access.redhat.com/errata/RHSA-2018:3083
https://access.redhat.com/errata/RHSA-2018:2948
http://www.securityfocus.com/bid/102291
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html