Linux Kernel CVE-2017-7895 Multiple Security Bypass Vulnerabilities

by CIRT Team

Description: The NFSv2 and NFSv3 server implementations in the Linux kernel through 4.10.13 lacks certain checks for the end of a buffer, which allows remote attackers to trigger pointer-arithmetic errors or possibly have unspecified other impact via crafted requests, related to fs/nfsd/nfs3xdr.c and fs/nfsd/nfsxdr.c.

Impact: Attackers can exploit these issues to bypass certain security restrictions and perform unauthorized actions. This may aid in further attacks.

Mitigation: Updates are available. Please check specific vendor advisory for more information.

Reference URL’s:

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7895
• http://www.securityfocus.com/bid/98085/info
• https://security-tracker.debian.org/tracker/CVE-2017-7895
• https://access.redhat.com/security/cve/CVE-2017-7895
• https://www.suse.com/security/cve/CVE-2017-7895/

CIRT Team

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