Buffer overflow in Linux Linux_kernel
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_U…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (2.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- Opensuse_project Leap — versions 42.3
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0, 9.0
- Opensuse Leap — versions 42.2
- Suse Linux_enterprise_desktop — versions 12
- Suse Linux_enterprise_server — versions 11, 12
- Suse Linux_enterprise_server_for_raspberry_pi — versions 12
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Patch, Third Party Advisory, Issue Tracking, x_refsource_SUSE)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Patch, Third Party Advisory, Issue Tracking, x_refsource_SUSE)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-17806?
- CVE-2017-17806 is a high-severity vulnerability in Linux Linux_kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2017-12-20.
- How severe is CVE-2017-17806?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-17806 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.