CVE-2017-1000111: Race Condition
First published: Tue Aug 08 2017(Updated: )
A race condition issue was found in the way the raw packet sockets implementation in the Linux kernel networking subsystem handled synchronization. A local user able to open a raw packet socket (requires the CAP_NET_RAW capability) could use this to waste resources in the kernels ring buffer or possibly cause a read-out-of-bounds on the heap possibly panicking the machine. In a default or common use of Red Hat Enterprise Linux 6 and 7 this issue does not allow an unprivileged local user to use this functionality. In order to exploit this issue the attacker needs CAP_NET_RAW capability, which needs to be granted by the administrator to the attacker's account. Since Red Hat Enterprise Linux does not have unprivileged user namespaces enabled by default, local unprivileged users also cannot abuse namespaces to grant this capability. Upstream patch: <a href="http://patchwork.ozlabs.org/patch/800274/">http://patchwork.ozlabs.org/patch/800274/</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=2.6.27<3.2.92 | |
| Linux Linux kernel | >=3.3<3.10.108 | |
| Linux Linux kernel | >=3.11<3.16.47 | |
| Linux Linux kernel | >=3.17<3.18.65 | |
| Linux Linux kernel | >=3.19<4.1.44 | |
| Linux Linux kernel | >=4.2<4.4.82 | |
| Linux Linux kernel | >=4.5<4.9.43 | |
| Linux Linux kernel | >=4.10<4.12.7 | |
| Redhat Enterprise Linux | =5.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux Desktop | =6.0 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =6.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Server Aus | =7.4 | |
| Redhat Enterprise Linux Server Aus | =7.6 | |
| Redhat Enterprise Linux Server Eus | =7.4 | |
| Redhat Enterprise Linux Server Eus | =7.5 | |
| Redhat Enterprise Linux Server Eus | =7.6 | |
| Redhat Enterprise Linux Server Tus | =7.4 | |
| Redhat Enterprise Linux Server Tus | =7.6 | |
| Redhat Enterprise Linux Workstation | =6.0 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| debian/linux | 4.19.249-2 4.19.289-2 5.10.197-1 5.10.205-2 6.1.66-1 6.1.69-1 6.5.13-1 6.6.9-1 |
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Reference Links
- http://www.debian.org/security/2017/dsa-3981
- http://www.securityfocus.com/bid/100267
- http://www.securitytracker.com/id/1039132
- https://access.redhat.com/errata/RHSA-2017:2918
- https://access.redhat.com/errata/RHSA-2017:2930
- https://access.redhat.com/errata/RHSA-2017:2931
- https://access.redhat.com/errata/RHSA-2017:3200
- https://access.redhat.com/security/cve/cve-2017-1000111
- https://git.kernel.org/linus/8913336a7e8d56e984109a3137d6c0e3362596a4
- https://git.kernel.org/linus/c27927e372f0785f3303e8fad94b85945e2c97b7
- https://security-tracker.debian.org/tracker/CVE-2017-1000111
- http://patchwork.ozlabs.org/patch/800274/
- http://seclists.org/oss-sec/2017/q3/279
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1480464
- https://bugzilla.redhat.com/show_bug.cgi?id=1479304
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