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CVE-2017-7184

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Date: March 19, 2017

The xfrm_replay_verify_len function in net/xfrm/xfrm_user.c in the Linux kernel through 4.10.6 does not validate certain size data after an XFRM_MSG_NEWAE update, which allows local users to obtain root privileges or cause a denial of service (heap-based out-of-bounds access) by leveraging the CAP_NET_ADMIN capability, as demonstrated during a Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52.

Language: C

Severity Score

Related Resources (20)

https://nvd.nist.gov/vuln/detail/CVE-2017-7184
http://www.securityfocus.com/bid/97018
https://security-tracker.debian.org/tracker/CVE-2017-7184
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f843ee6dd019bcece3e74e76ad9df0155655d0df
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=677e806da4d916052585301785d847c3b3e6186a
https://access.redhat.com/errata/RHSA-2019:4159
https://access.redhat.com/security/cve/CVE-2017-7184
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-7184
https://twitter.com/thezdi/status/842126074435665920
https://github.com/torvalds/linux/commit/f843ee6dd019bcece3e74e76ad9df0155655d0df
https://access.redhat.com/errata/RHSA-2017:2931
https://source.android.com/security/bulletin/2017-05-01
https://access.redhat.com/errata/RHSA-2017:2930
http://www.eweek.com/security/ubuntu-linux-falls-on-day-1-of-pwn2own-hacking-competition
https://blog.trendmicro.com/results-pwn2own-2017-day-one/
http://openwall.com/lists/oss-security/2017/03/29/2
https://access.redhat.com/errata/RHSA-2017:2918
http://www.securitytracker.com/id/1038166
https://github.com/torvalds/linux/commit/677e806da4d916052585301785d847c3b3e6186a
https://www.mend.io/vulnerability-database/CVE-2017-7184

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Insufficient Information

NVD-CWE-noinfo

Top Fix

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CVSS v3.1

Base Score:
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

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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