CVE-2018-1312 Security feature bypass in Apache HTTP Server
Critical 9.8
Published
Updated
Check this codebase for CVE-2018-1312 and fix it if it is affected.
What it is: CVE-2018-1312 is a critical vulnerability in Apache Http Server, published on 26 Mar 2018. 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-2018-1312 in the wild and no public exploit code.
Affected product: Apache Http Server. 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-2018-1312/ (Markdown: https://insights.sbomify.com/CVE-2018-1312/index.md)
Attackers can replay HTTP requests across clustered servers using weak Digest authentication nonces, bypassing anti-replay protections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1312?
CVE-2018-1312 is a critical vulnerability in Apache Http Server, published on 26 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
Weakness: CWE-287
Which versions are affected by CVE-2018-1312?
It affects 13 products.
Linux distribution packages (36)
httpd Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
httpd-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
httpd-devel Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
httpd-manual Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
httpd-tools Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
mod_ldap Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
mod_proxy_html Red Hat:enterprise_linux:7::client | All versions | 1:2.4.6-89.el7_6.1 |
mod_session Red Hat:enterprise_linux:7::client | All versions | 0:2.4.6-89.el7_6.1 |
mod_ssl Red Hat:enterprise_linux:7::client | All versions | 1:2.4.6-89.el7_6.1 |
httpd Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
httpd-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
httpd-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
httpd-manual Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
httpd-tools Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
mod_ldap Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
mod_proxy_html Red Hat:enterprise_linux:7::computenode | All versions | 1:2.4.6-89.el7_6.1 |
mod_session Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.6-89.el7_6.1 |
mod_ssl Red Hat:enterprise_linux:7::computenode | All versions | 1:2.4.6-89.el7_6.1 |
httpd Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
httpd-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
httpd-devel Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
httpd-manual Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
httpd-tools Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
mod_ldap Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
mod_proxy_html Red Hat:enterprise_linux:7::server | All versions | 1:2.4.6-89.el7_6.1 |
mod_session Red Hat:enterprise_linux:7::server | All versions | 0:2.4.6-89.el7_6.1 |
mod_ssl Red Hat:enterprise_linux:7::server | All versions | 1:2.4.6-89.el7_6.1 |
httpd Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
httpd-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
httpd-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
httpd-manual Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
httpd-tools Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
mod_ldap Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
mod_proxy_html Red Hat:enterprise_linux:7::workstation | All versions | 1:2.4.6-89.el7_6.1 |
mod_session Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.6-89.el7_6.1 |
mod_ssl Red Hat:enterprise_linux:7::workstation | All versions | 1:2.4.6-89.el7_6.1 |
Products include Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux, Netapp Cloud Backup, Netapp Clustered Data Ontap, Netapp Storagegrid and 7 more.
How do I fix CVE-2018-1312?
Upgrade to a fixed version.
Is CVE-2018-1312 being exploited?
There is no known exploitation of CVE-2018-1312 in the wild and no public exploit code.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2018-1312, CLEANSTART-2026-QH33637, DEBIAN-CVE-2018-1312, GHSA-hvff-4fq3-p325, RHSA-2019:1898, UBUNTU-CVE-2018-1312.