CVE-2021-46784 Denial of service in n/a
Medium 6.5
Published
Updated
Check this codebase for CVE-2021-46784 and fix it if it is affected.
What it is: CVE-2021-46784 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 17 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-46784 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-2021-46784/ (Markdown: https://insights.sbomify.com/CVE-2021-46784/index.md)
An attacker can cause a denial of service in Squid proxy servers by sending long Gopher server responses due to improper buffer management.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46784?
CVE-2021-46784 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 17 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
Weakness: CWE-617
Which versions are affected by CVE-2021-46784?
It affects 2 products.
Linux distribution packages (40)
libecap AlmaLinux:8 | All versions | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
libecap-devel AlmaLinux:8 | All versions | 1.0.1-2.module_el8.6.0+2741+01592ae8 |
squid AlmaLinux:8 | All versions | 7:4.15-3.module_el8.6.0+3010+383bc947.1 |
squid AlmaLinux:9 | All versions | 7:5.2-1.el9_0.1 |
squid Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.7 |
squid-debuginfo Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.7 |
squid-migration-script Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.7 |
squid-sysvinit Red Hat:enterprise_linux:7::server | All versions | 7:3.5.20-17.el7_9.7 |
squid Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.7 |
squid-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.7 |
squid-migration-script Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.7 |
squid-sysvinit Red Hat:enterprise_linux:7::workstation | All versions | 7:3.5.20-17.el7_9.7 |
libecap Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
squid Red Hat:enterprise_linux:8::appstream | All versions | 7:4.15-3.module+el8.6.0+15801+8fa20c64.1 |
squid-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 7:4.15-3.module+el8.6.0+15801+8fa20c64.1 |
squid-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 7:4.15-3.module+el8.6.0+15801+8fa20c64.1 |
squid Red Hat:enterprise_linux:9::appstream | All versions | 7:5.2-1.el9_0.1 |
squid-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 7:5.2-1.el9_0.1 |
squid-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 7:5.2-1.el9_0.1 |
libecap Red Hat:rhel_e4s:8.1::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debuginfo Red Hat:rhel_e4s:8.1::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debugsource Red Hat:rhel_e4s:8.1::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-devel Red Hat:rhel_e4s:8.1::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
squid Red Hat:rhel_e4s:8.1::appstream | All versions | 7:4.4-8.module+el8.1.0+15805+9a5539dc.4 |
squid-debuginfo Red Hat:rhel_e4s:8.1::appstream | All versions | 7:4.4-8.module+el8.1.0+15805+9a5539dc.4 |
squid-debugsource Red Hat:rhel_e4s:8.1::appstream | All versions | 7:4.4-8.module+el8.1.0+15805+9a5539dc.4 |
libecap Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debuginfo Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debugsource Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-devel Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
squid Red Hat:rhel_eus:8.2::appstream | All versions | 7:4.4-8.module+el8.2.0+15803+1b4cda03.4 |
squid-debuginfo Red Hat:rhel_eus:8.2::appstream | All versions | 7:4.4-8.module+el8.2.0+15803+1b4cda03.4 |
squid-debugsource Red Hat:rhel_eus:8.2::appstream | All versions | 7:4.4-8.module+el8.2.0+15803+1b4cda03.4 |
libecap Red Hat:rhel_eus:8.4::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debuginfo Red Hat:rhel_eus:8.4::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-debugsource Red Hat:rhel_eus:8.4::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
libecap-devel Red Hat:rhel_eus:8.4::appstream | All versions | 0:1.0.1-2.module+el8.1.0+4044+36416a77 |
Products include Debian Debian Linux, Squid-Cache Squid.
How do I fix CVE-2021-46784?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-46784 being exploited?
There is no known exploitation of CVE-2021-46784 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALSA-2022:5526, ALSA-2022:5527, CLSA-2022-1658855510, CLSA-2022-1658856112, DEBIAN-CVE-2021-46784, GHSA-f5cp-6rh3-284w and 13 more.