CVE-2019-20372 Other in n/a
Medium 5.3
Published
Updated
Check this codebase for CVE-2019-20372 and fix it if it is affected.
What it is: CVE-2019-20372 is a medium-severity vulnerability in Apple Xcode, published on 9 Jan 2020. 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-2019-20372 in the wild and no public exploit code.
Affected product: Apple Xcode. 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-2019-20372/ (Markdown: https://insights.sbomify.com/CVE-2019-20372/index.md)
Attackers can perform HTTP request smuggling to read unauthorized web pages when NGINX uses specific error_page configurations behind a load balancer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-20372?
CVE-2019-20372 is a medium-severity vulnerability in Apple Xcode, published on 9 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.
Weakness: CWE-444
Which versions are affected by CVE-2019-20372?
It affects 5 products.
Linux distribution packages (28)
nginx Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-all-modules Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-filesystem Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-image-filter Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-image-filter-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-perl Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-perl-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-xslt-filter Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-http-xslt-filter-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-mail Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-mail-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-stream Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
nginx-mod-stream-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:1.16.1-1.module+el8.3.0+8844+e5e7039f.1 |
rh-nginx116-nginx Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-debuginfo Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-mod-http-image-filter Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-mod-http-perl Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-mod-http-xslt-filter Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-mod-mail Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
rh-nginx116-nginx-mod-stream Red Hat:rhel_software_collections:3::el7 | All versions | 1:1.16.1-4.el7.1 |
nginx SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 1.16.1-3.12.7 |
nginx SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 1.16.1-3.12.7 |
nginx SUSE:Linux Enterprise Module for Server Applications 15 SP1 | All versions | 1.14.2-6.7.1 |
nginx SUSE:Linux Enterprise Server 15-LTSS | All versions | 1.16.1-3.12.7 |
nginx SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 1.16.1-3.12.7 |
nginx openSUSE:Leap 15.1 | All versions | 1.14.2-lp151.4.6.1 |
Products include Apple Xcode, Canonical Ubuntu Linux, F5 Nginx, Netapp Cloud Backup, Opensuse Leap.
How do I fix CVE-2019-20372?
Upgrade to a fixed version.
Is CVE-2019-20372 being exploited?
There is no known exploitation of CVE-2019-20372 in the wild and no public exploit code.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in Apple Xcode
Sources
Also known as ALPINE-CVE-2019-20372, CLEANSTART-2026-OM02824, DEBIAN-CVE-2019-20372, GHSA-c9vh-3f9g-f2xf, MGASA-2020-0231, RHSA-2020:2817 and 7 more.