high
7.8
CWE
787 362
Advisory Published
CVE Published
Updated

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 SoftwareAffected VersionHow to fix
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
Linux Kernel>=2.6.27<3.2.92
Linux Kernel>=3.3<3.10.108
Linux Kernel>=3.11<3.16.47
Linux Kernel>=3.17<3.18.65
Linux Kernel>=3.19<4.1.44
Linux Kernel>=4.2<4.4.82
Linux Kernel>=4.5<4.9.43
Linux Kernel>=4.10<4.12.7
Red Hat Enterprise Linux=5.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Debian Linux=8.0
Debian Linux=9.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2017-1000111?

    CVE-2017-1000111 has a medium severity rating, indicating a moderate risk to systems.

  • How do I fix CVE-2017-1000111?

    To fix CVE-2017-1000111, users should upgrade the Linux kernel to a version that includes the appropriate patches as specified by their distribution.

  • What systems are affected by CVE-2017-1000111?

    CVE-2017-1000111 affects various versions of the Linux kernel, particularly those below 4.19.249-2 and those within specific ranges up to 6.6.9-1.

  • Can CVE-2017-1000111 be exploited remotely?

    CVE-2017-1000111 cannot be exploited remotely as it requires local access to exploit the vulnerability.

  • What capabilities are required to exploit CVE-2017-1000111?

    To exploit CVE-2017-1000111, a local user must have the CAP_NET_RAW capability to open a raw packet socket.

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