5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.9 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
11.6%
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When nettyโs multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method โFile.createTempFileโ on unix-like systems creates a random file, but, by default will create this file with the permissions โ-rw-rโrโโ. Thus, if sensitive information is written to this file, other local users can read this information. This is the case in nettyโs โAbstractDiskHttpDataโ is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own โjava.io.tmpdirโ when you start the JVM or use โDefaultHttpDataFactory.setBaseDir(โฆ)โ to set the directory to something that is only readable by the current user.
github.com/netty/netty/commit/c735357bf29d07856ad171c6611a2e1a0e0000ec
github.com/netty/netty/security/advisories/GHSA-5mcr-gq6c-3hq2
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security.netapp.com/advisory/ntap-20220210-0011/
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www.oracle.com//security-alerts/cpujul2021.html
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www.oracle.com/security-alerts/cpuoct2021.html
More
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.9 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
11.6%