CVE-2017-7895 Memory corruption in n/a
Critical 9.8
Published
Updated
Check this codebase for CVE-2017-7895 and fix it if it is affected.
What it is: CVE-2017-7895 is a critical memory corruption vulnerability in Debian Debian Linux, published on 28 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-7895 in the wild and no public exploit code.
Affected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2017-7895/ (Markdown: https://insights.sbomify.com/CVE-2017-7895/index.md)
Remote attackers can trigger pointer-arithmetic errors in the Linux kernel NFS server, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7895?
CVE-2017-7895 is a critical memory corruption vulnerability in Debian Debian Linux, published on 28 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-119
Which versions are affected by CVE-2017-7895?
It affects 2 products.
Linux distribution packages (40)
kernel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-devel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-doc Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-firmware Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel-headers Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
perf Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
perf-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
python-perf Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
python-perf-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-696.6.3.el6 |
kernel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-doc Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-firmware Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel-headers Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
perf Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
perf-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
python-perf Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
python-perf-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-696.6.3.el6 |
kernel Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-bootwrapper Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-696.6.3.el6 |
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2017-7895?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-7895 being exploited?
There is no known exploitation of CVE-2017-7895 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-7895, GHSA-wj85-r27r-99vw, RHSA-2017:1715, RHSA-2017:1723, RHSA-2017:1766, RHSA-2017:1798 and 5 more.