SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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.

HIGH 7.5EPSS 9.44%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (9.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
9.44% probability · 95th percentile
CISA KEV
Not listed
Weakness
CWE-770
Affected
netty/netty · debian/debian linux · fedoraproject/fedora · netapp/oncommand api services · netapp/oncommand insight · netapp/oncommand workflow automation · oracle/communications brm - elastic charging engine · oracle/communications cloud native core service communication proxy · oracle/communications design studio · oracle/nosql database · oracle/siebel core - server framework · oracle/webcenter portal · oracle/communications messaging server
Source
cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.