CVE-2017-7895

high-risk
Published 2017-04-28

The NFSv2 and NFSv3 server implementations in the Linux kernel through 4.10.13 lack 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.

Do I need to act?

!
21.5% chance of exploitation in next 30 days
EPSS score — higher than 78% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Debian Linux

References (32)

Third Party Advisory http://www.debian.org/security/2017/dsa-3886
Third Party Advisory http://www.securityfocus.com/bid/98085
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1615
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1616
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1647
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1715
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1723
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1766
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1798
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:2412
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:2428
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:2429
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:2472
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:2732
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13...
Patch https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae14543630...
Third Party Advisory http://www.debian.org/security/2017/dsa-3886
Third Party Advisory http://www.securityfocus.com/bid/98085
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1615
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1616
and 12 more references
55
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 14/34 · Moderate
Exposure 9/34 · Low