CVE-2022-2255 Incorrect header handling in mod-wsgi
High 7.5
Published
Updated
Check this codebase for CVE-2022-2255 and fix it if it is affected.
What it is: CVE-2022-2255 is a high-severity vulnerability in Debian Debian Linux, published on 25 Aug 2022. 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-2022-2255 in the wild and no public exploit code.
Affected packages and fixed versions:
- mod-wsgi (PyPI): affected all versions; fixed in 4.9.3
- mod-wsgi (PyPI): affected all versions; fixed in 4.9.3
- mod-wsgi (PyPI): affected all versions; fixed in 4.9.3
- mod_wsgi (Bitnami): affected all versions; fixed in 4.9.3
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-2022-2255/ (Markdown: https://insights.sbomify.com/CVE-2022-2255/index.md)
Attackers can spoof client IP addresses by injecting X-Client-IP headers, bypassing IP-based security controls in WSGI applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-2255?
CVE-2022-2255 is a high-severity vulnerability in Debian Debian Linux, published on 25 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application because the condition to remove it is missing.
Which versions are affected by CVE-2022-2255?
4 open source packages ship an affected version, including mod-wsgi and mod_wsgi. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
mod-wsgi PyPI | All versions | 4.9.3 |
mod-wsgi PyPI | All versions | 4.9.3 |
mod-wsgi PyPI | All versions | 4.9.3 |
mod_wsgi Bitnami | All versions | 4.9.3 |
Linux distribution packages (36)
python39 AlmaLinux:8 | All versions | 3.9.20-1.module_el8.10.0+3902+1690be06 |
python39-PyMySQL AlmaLinux:8 | All versions | 0.10.1-2.module_el8.6.0+2780+a40f65e1 |
python39-cffi AlmaLinux:8 | All versions | 1.14.3-2.module_el8.6.0+2780+a40f65e1 |
python39-cffi AlmaLinux:8 | All versions | 1.14.3-2.module_el8.6.0+3248+c431e88c |
python39-chardet AlmaLinux:8 | All versions | 3.0.4-19.module_el8.6.0+2780+a40f65e1 |
python39-cryptography AlmaLinux:8 | All versions | 3.3.1-3.module_el8.10.0+3765+2f9a457d |
python39-devel AlmaLinux:8 | All versions | 3.9.20-1.module_el8.10.0+3902+1690be06 |
python39-idle AlmaLinux:8 | All versions | 3.9.20-1.module_el8.10.0+3902+1690be06 |
python39-idna AlmaLinux:8 | All versions | 2.10-4.module_el8.10.0+3849+a48d89aa |
python39-libs AlmaLinux:8 | All versions | 3.9.20-1.module_el8.10.0+3902+1690be06 |
python39-lxml AlmaLinux:8 | All versions | 4.6.5-1.module_el8.6.0+2780+a40f65e1 |
python39-lxml AlmaLinux:8 | All versions | 4.6.5-1.module_el8.6.0+3248+c431e88c |
python39-mod_wsgi AlmaLinux:8 | All versions | 4.7.1-7.module_el8.10.0+3989+a618fe15.1 |
python39-numpy AlmaLinux:8 | All versions | 1.19.4-3.module_el8.6.0+2780+a40f65e1 |
python39-numpy AlmaLinux:8 | All versions | 1.19.4-3.module_el8.6.0+3248+c431e88c |
python39-numpy-doc AlmaLinux:8 | All versions | 1.19.4-3.module_el8.6.0+2780+a40f65e1 |
python39-numpy-f2py AlmaLinux:8 | All versions | 1.19.4-3.module_el8.6.0+2780+a40f65e1 |
python39-numpy-f2py AlmaLinux:8 | All versions | 1.19.4-3.module_el8.6.0+3248+c431e88c |
python39-pip AlmaLinux:8 | All versions | 20.2.4-9.module_el8.10.0+3765+2f9a457d |
python39-pip-wheel AlmaLinux:8 | All versions | 20.2.4-9.module_el8.10.0+3765+2f9a457d |
python39-ply AlmaLinux:8 | All versions | 3.11-10.module_el8.6.0+2780+a40f65e1 |
python39-psutil AlmaLinux:8 | All versions | 5.8.0-4.module_el8.6.0+2780+a40f65e1 |
python39-psutil AlmaLinux:8 | All versions | 5.8.0-4.module_el8.6.0+3248+c431e88c |
python39-psycopg2 AlmaLinux:8 | All versions | 2.8.6-3.module_el8.10.0+3765+2f9a457d |
python39-psycopg2-doc AlmaLinux:8 | All versions | 2.8.6-3.module_el8.10.0+3765+2f9a457d |
python39-psycopg2-tests AlmaLinux:8 | All versions | 2.8.6-3.module_el8.10.0+3765+2f9a457d |
python39-pycparser AlmaLinux:8 | All versions | 2.20-3.module_el8.6.0+2780+a40f65e1 |
python39-pysocks AlmaLinux:8 | All versions | 1.7.1-4.module_el8.6.0+2780+a40f65e1 |
python39-pyyaml AlmaLinux:8 | All versions | 5.4.1-1.module_el8.6.0+2780+a40f65e1 |
python39-pyyaml AlmaLinux:8 | All versions | 5.4.1-1.module_el8.6.0+3248+c431e88c |
python39-requests AlmaLinux:8 | All versions | 2.25.0-3.module_el8.9.0+3634+fb2a896c |
python39-rpm-macros AlmaLinux:8 | All versions | 3.9.20-1.module_el8.10.0+3902+1690be06 |
python39-scipy AlmaLinux:8 | All versions | 1.5.4-5.module_el8.9.0+3634+fb2a896c |
python39-setuptools AlmaLinux:8 | All versions | 50.3.2-6.module_el8.10.0+3885+d986a391 |
python39-setuptools-wheel AlmaLinux:8 | All versions | 50.3.2-6.module_el8.10.0+3885+d986a391 |
python39-six AlmaLinux:8 | All versions | 1.15.0-3.module_el8.6.0+2780+a40f65e1 |
Products include Debian Debian Linux, Modwsgi Mod Wsgi.
How do I fix CVE-2022-2255?
Upgrade mod-wsgi to 4.9.3 or later.
Is CVE-2022-2255 being exploited?
There is no known exploitation of CVE-2022-2255 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALSA-2025:4791, AZL-10734, BIT-mod_wsgi-2022-2255, DEBIAN-CVE-2022-2255, DLA-3111-1, GHSA-7527-8855-9cf8 and 11 more.