Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS05dmpwLXY3NmYtZzM2M80Vrw

SnappyFrameDecoder doesn't restrict chunk length any may buffer skippable chunks in an unnecessary way

Impact

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.

Impact

All users of SnappyFrameDecoder are affected and so the application may be in risk for a DoS attach due excessive memory usage.

References

https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L79
https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L171
https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L185

Permalink: https://github.com/advisories/GHSA-9vjp-v76f-g363
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS05dmpwLXY3NmYtZzM2M80Vrw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 9 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-9vjp-v76f-g363, CVE-2021-37137
References:

• https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363
• https://github.com/netty/netty/commit/6da4956b31023ae967451e1d94ff51a746a9194f
• https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L171
• https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L185
• https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L79
• https://nvd.nist.gov/vuln/detail/CVE-2021-37137
• https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e@%3Cdev.tinkerpop.apache.org%3E
• https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d@%3Ccommits.druid.apache.org%3E
• https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb@%3Ccommits.druid.apache.org%3E
• https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04@%3Ccommits.druid.apache.org%3E
• https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0@%3Ccommits.druid.apache.org%3E
• https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16@%3Ccommits.druid.apache.org%3E
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://security.netapp.com/advisory/ntap-20220210-0012/
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.oracle.com/security-alerts/cpujul2022.html
• https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html
• https://www.debian.org/security/2023/dsa-5316
• https://github.com/advisories/GHSA-9vjp-v76f-g363

Repository: https://github.com/netty/netty
Blast Radius: 31.2

Affected Packages