CVE catalog
CVE-2021-37137
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was receive
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 6.57% · Oct 25, 2026
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | netty | sid | 1:4.1.48-16 | fixed |
| Debian | netty | forky | 1:4.1.48-16 | fixed |
| Debian | netty | trixie | 1:4.1.48-10+deb13u1 | fixed |
| Debian | netty | trixie-security | 1:4.1.48-10+deb13u1 | fixed |
| Debian | netty | bookworm | 1:4.1.48-7+deb12u2 | fixed |
| Debian | netty | bookworm-security | 1:4.1.48-7+deb12u2 | fixed |
| Cpe | netty | Not reported | 4.1.68 | fixed |
| Cpe | banking_apis | Not reported | Not reported | unknown |
| Cpe | banking_apis | Not reported | Not reported | unknown |
| Cpe | banking_apis | Not reported | Not reported | unknown |
| Cpe | banking_apis | Not reported | Not reported | unknown |
| Cpe | banking_apis | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | banking_digital_experience | Not reported | Not reported | unknown |
| Cpe | commerce_guided_search | Not reported | Not reported | unknown |
| Cpe | communications_brm_-_elastic_charging_engine | Not reported | 12.0.0.4.6 | fixed |
| Cpe | communications_brm_-_elastic_charging_engine | Not reported | Not reported | unknown |
| Cpe | communications_cloud_native_core_binding_support_function | Not reported | Not reported | unknown |
| Cpe | communications_diameter_signaling_router | Not reported | Not reported | unknown |
| Cpe | peoplesoft_enterprise_peopletools | Not reported | Not reported | unknown |
| Cpe | peoplesoft_enterprise_peopletools | Not reported | Not reported | unknown |
| Ubuntu | netty | pro | 1:4.1.33-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-2 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-3 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm1 | fixed |
| Ubuntu | netty | 22.04 | 1:4.1.48-4 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u1build0.22.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | netty | source | sid | 1:4.1.48-6 | not yet assigned | Not reported | [1014769] |
| Debian | netty | source | forky | 1:4.1.48-6 | not yet assigned | Not reported | [1014769] |
| Debian | netty | source | trixie | 1:4.1.48-6 | not yet assigned | Not reported | [1014769] |
| Debian | netty | source | bookworm | 1:4.1.48-6 | not yet assigned | Not reported | [1014769] |
| Cpe | netty | cpe | Not reported | 4.1.68 | Not reported | NVD-CVE-2021-37137 | Not reported |
| Cpe | communications_brm_-_elastic_charging_engine | cpe | Not reported | 12.0.0.4.6 | Not reported | NVD-CVE-2021-37137 | Not reported |
| Ubuntu | netty | deb | pro | 1:4.1.45-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2021-37137 | Not reported |
| Ubuntu | netty | deb | 22.04 | 1:4.1.48-4+deb11u1build0.22.04.1 | Not reported | UBUNTU-CVE-2021-37137 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libnetty-java]Unknown
Source package: [netty]
Details (4)
1:4.1.48-7+deb12u2· all · bookwormFixed · Fixed:
1:4.1.48-6nvd · netty · debian · bookworm; nvd · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookwormFixed · Fixed:
1:4.1.48-6nvd · netty · debian · bookworm; nvd · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookworm-securityFixed · Fixed:
1:4.1.48-6nvd · netty · debian · bookworm; nvd · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookworm-securityFixed · Fixed:
1:4.1.48-6nvd · netty · debian · bookworm; nvd · netty · debian · 12
[Debian 13 (Trixie)]
- [libnetty-java]Unknown
Source package: [netty]
Details (4)
1:4.1.48-10+deb13u1· all · trixieFixed · Fixed:
1:4.1.48-6nvd · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixieFixed · Fixed:
1:4.1.48-6nvd · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixie-securityFixed · Fixed:
1:4.1.48-6nvd · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixie-securityFixed · Fixed:
1:4.1.48-6nvd · netty · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_1271-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2021-37137]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-37137]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-37137]
- [https://security-tracker.debian.org/tracker/CVE-2021-37137]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-37137.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0794.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]