CVE-2021-37137GHSA-9VJP-V76F-G363
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 4.1.68Final, 4.1.68.Final
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- The Netty project Netty
From unspecified · fixed in 4.1.68Final
- io.netty:netty-codecMaven
From 4.0.0 · fixed in 4.1.68.Final
- org.jboss.netty:nettyMaven
All versions
- io.netty:nettyMaven
All versions
References 13
GitHub · netty/netty
lists.apache.org
- thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e@<dev.tinkerpop.apache.org>
- thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0@<commits.druid.apache.org>
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