CVE-2017-17806
CVE-2017-17806
The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.
Affected products
n/a · n/aWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.htmlhttp://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.htmlhttp://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.htmlhttp://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.htmlhttp://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.htmlhttps://access.redhat.com/errata/RHSA-2018:2948https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1https://lists.debian.org/debian-lts-announce/2018/01/msg00004.htmlhttps://usn.ubuntu.com/3583-1/https://usn.ubuntu.com/3583-2/https://usn.ubuntu.com/3617-1/