CVE-2017-7895
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 10.8% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 10.8% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 10.8% · EPSS, next 30 days
- Weakness
- CWE-119 · Buffer errors
- Record status
- Modified
Affected
- Linux Kernel < 3.2.89
- Linux Kernel < 3.16.44
- Linux Kernel < 4.1.40
- Linux Kernel < 4.4.67
- Linux Kernel < 4.9.26
- Linux Kernel < 4.10.14
- Debian Linux 8.0
- Debian Linux 9.0
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2017-7895.md and follow it. Check whether this project is affected by CVE-2017-7895. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309
References
- http://www.debian.org/security/2017/dsa-3886
- http://www.securityfocus.com/bid/98085
- https://access.redhat.com/errata/RHSA-2017:1615
- https://access.redhat.com/errata/RHSA-2017:1616
- https://access.redhat.com/errata/RHSA-2017:1647
- https://access.redhat.com/errata/RHSA-2017:1715
- https://access.redhat.com/errata/RHSA-2017:1723
- https://access.redhat.com/errata/RHSA-2017:1766
- https://access.redhat.com/errata/RHSA-2017:1798
- https://access.redhat.com/errata/RHSA-2017:2412
- https://access.redhat.com/errata/RHSA-2017:2428
- https://access.redhat.com/errata/RHSA-2017:2429
- https://access.redhat.com/errata/RHSA-2017:2472
- https://access.redhat.com/errata/RHSA-2017:2732
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- http://www.debian.org/security/2017/dsa-3886
- http://www.securityfocus.com/bid/98085
- https://access.redhat.com/errata/RHSA-2017:1615
- https://access.redhat.com/errata/RHSA-2017:1616
- https://access.redhat.com/errata/RHSA-2017:1647
- https://access.redhat.com/errata/RHSA-2017:1715
- https://access.redhat.com/errata/RHSA-2017:1723
- https://access.redhat.com/errata/RHSA-2017:1766
- https://access.redhat.com/errata/RHSA-2017:1798