CVE-2017-7645
Vulnerability Summary
Timeline
Description
The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.
CVSS Metrics
- v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- v2.0•HIGH•Score: 7.8AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS Trends
Current EPSS score: 5.91%• Percentile: 93%
Techniques & Countermeasures
- CWE-20•Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Affected Systems
- canonical•ubuntu_linux
14.04
- debian•linux
< 4.9.25-1 | < 4.9.25-1 | < 4.9.25-1 | < 4.9.25-1
- ubuntu•linux
< 3.13.0-157.207 | < 4.4.0-79.100
- ubuntu•linux-aws
< 4.4.0-1018.27
- ubuntu•linux-azure-6.11
all
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fde-5.15
all
- ubuntu•linux-gcp-6.11
all
- ubuntu•linux-gke
< 4.4.0-1014.14 | all
- ubuntu•linux-hwe
< 4.10.0-32.36~16.04.1
- ubuntu•linux-hwe-6.11
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-lowlatency-hwe-6.11
all
- ubuntu•linux-lts-xenial
< 4.4.0-79.100~14.04.1
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1057.64 | all
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all | all
- ubuntu•linux-snapdragon
< 4.4.0-1059.63
- debian•debian_linux
8.0 | 9.0
- linux•linux_kernel
< 3.2.89 | ≥ 3.3, < 3.10.107 | ≥ 3.11, < 3.12.74 | ≥ 3.13, < 3.16.44 | ≥ 3.17, < 3.18.52 | ≥ 3.19, < 4.1.40 | ≥ 4.2, < 4.4.66 | ≥ 4.5, < 4.9.26 | ≥ 4.10, < 4.10.14
References (22)
- https://marc.info/?l=linux-nfs&m=149247516212924&w=2
- https://access.redhat.com/errata/RHSA-2017:1615
- https://usn.ubuntu.com/3754-1/
- https://access.redhat.com/errata/RHSA-2017:1647
- https://access.redhat.com/errata/RHSA-2017:1616
- https://access.redhat.com/errata/RHSA-2018:1319
- https://github.com/torvalds/linux/commit/e6838a29ecb484c97e4efef9429643b9851fba6e
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- http://www.securityfocus.com/bid/97950
- https://marc.info/?l=linux-nfs&m=149218228327497&w=2
- http://www.debian.org/security/2017/dsa-3886
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6838a29ecb484c97e4efef9429643b9851fba6e
- https://ubuntu.com/security/CVE-2017-7645
- https://github.com/torvalds/linux/commit/db44bac41bbfc0c0d9dd943092d8bded3c9db19b
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://ubuntu.com/security/notices/USN-3314-1
- https://ubuntu.com/security/notices/USN-3312-1
- https://ubuntu.com/security/notices/USN-3312-2
- https://ubuntu.com/security/notices/USN-3361-1
- https://ubuntu.com/security/notices/USN-3754-1
- https://www.cve.org/CVERecord?id=CVE-2017-7645
- https://security-tracker.debian.org/tracker/CVE-2017-7645