Is CVE-2017-7184 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 2%.

What products does CVE-2017-7184 affect?

Tracked products affected include Ubuntu. Check the version you run to see whether it is affected.

How do I fix CVE-2017-7184?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2017-7184

Q: What is CVE-2017-7184?

CVE-2017-7184 is a high-severity software vulnerability with a CVSS score of 7.8. 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 servi

HIGH severity · CVSS 7.8

7.8CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)2%

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Ubuntu

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=677e806da4d916052585301785d847c3b3e6186aAdvisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f843ee6dd019bcece3e74e76ad9df0155655d0dfAdvisory
http://openwall.com/lists/oss-security/2017/03/29/2Advisory
http://www.eweek.com/security/ubuntu-linux-falls-on-day-1-of-pwn2own-hacking-competitionAdvisory
http://www.securityfocus.com/bid/97018Advisory
http://www.securitytracker.com/id/1038166Advisory
https://access.redhat.com/errata/RHSA-2017:2918Advisory
https://access.redhat.com/errata/RHSA-2017:2930Advisory