High severity · published Apr 7, 2020
CVE-2020-11612
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream
7.5
CVSS
9.2%
EPSS
No
On KEV
Description
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)9.2% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
Communications Brm - Elastic Charging Engine · Oracle
12.0.0.3 · source: NVD
CC
Communications Cloud Native Core Service Communication Proxy · Oracle
1.5.2 · source: NVD
CD
Communications Design Studio · Oracle
7.4.2 · source: NVD
CM
Communications Messaging Server · Oracle
8.1 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
NE
Netty · Netty
4.1 before 4.1.46 · source: NVD
ND
Nosql Database · Oracle
before 20.3 · source: NVD
OA
Oncommand Api Services · Netapp
All versions, or not specified · source: NVD
OI
Oncommand Insight · Netapp
All versions, or not specified · source: NVD
OW
Oncommand Workflow Automation · Netapp
All versions, or not specified · source: NVD
SC
Siebel Core - Server Framework · Oracle
before 21.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-11612
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-11612
Patch
https://github.com/netty/netty/compare/netty-4.1.45.Final...netty-4.1.46.Final
Third Party Advisory
https://github.com/netty/netty/issues/6168
Patch
https://github.com/netty/netty/pull/9924
lists.apache.org
https://lists.apache.org/thread.html/r14446ed58208cb6d97b6faa6ebf145f1cf2c70c0886c0c133f4d3b6f%40%3Ccommits.druid.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r255ed239e65d0596812362adc474bee96caf7ba042c7ad2f3c62cec7%40%3Cissues.zookeeper.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r281882fdf9ea89aac02fd2f92786693a956aac2ce9840cce87c7df6b%40%3Ccommits.zookeeper.apache.org%3E
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