Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | 4.8 |
| Canonical | Ubuntu Linux | 16.10 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=677e80Vendor Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f843eeVendor Advisory
- http://openwall.com/lists/oss-security/2017/03/29/2Mailing ListThird Party Advisory
- http://www.eweek.com/security/ubuntu-linux-falls-on-day-1-of-pwn2own-hacking-comTechnical DescriptionThird Party Advisory
- http://www.securityfocus.com/bid/97018Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038166Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2918Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2930Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2931Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4159Third Party Advisory
- https://blog.trendmicro.com/results-pwn2own-2017-day-one/Technical DescriptionThird Party Advisory
- https://github.com/torvalds/linux/commit/677e806da4d916052585301785d847c3b3e6186Third Party Advisory
- https://github.com/torvalds/linux/commit/f843ee6dd019bcece3e74e76ad9df0155655d0dThird Party Advisory
- https://source.android.com/security/bulletin/2017-05-01Third Party Advisory
- https://twitter.com/thezdi/status/842126074435665920Press/Media CoverageThird Party Advisory
FAQ
What is CVE-2017-7184?
CVE-2017-7184 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ro...
How severe is CVE-2017-7184?
CVE-2017-7184 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7184?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux.