National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-17806 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  12/20/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8


Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1 Patch
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/102293 Third Party Advisory VDB Entry
https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1 Patch
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
https://usn.ubuntu.com/3583-1/
https://usn.ubuntu.com/3583-2/
https://usn.ubuntu.com/3617-1/
https://usn.ubuntu.com/3617-2/
https://usn.ubuntu.com/3617-3/
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3632-1/
https://www.debian.org/security/2017/dsa-4073 Third Party Advisory
https://www.debian.org/security/2018/dsa-4082
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Issue Tracking Release Notes

Technical Details

Vulnerability Type (View All)

Change History

11 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-17806
NVD Published Date:
12/20/2017
NVD Last Modified:
04/24/2018