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
AI Score
Confidence
High
EPSS
Percentile
5.1%
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 File.createTempFile on unix-like systems creates a file with predefined name (so easily identifiable) and by default will create this file with the permissions -rw-r–r–. Thus, if sensitive information is written to this file, other local users can read this information.
File.createTempFile(String, String) will create a temporary file in the system temporary directory if the ‘java.io.tmpdir’ system property is not explicitly set.
This affects the class https://github.com/apache/storm/blob/master/storm-core/src/jvm/org/apache/storm/utils/TopologySpoutLag.java#L99 and was introduced by https://issues.apache.org/jira/browse/STORM-3123
In practice, this has a very limited impact as this class is used only if ui.disable.spout.lag.monitoring
is set to false, but its value is true by default.
Moreover, the temporary file gets deleted soon after its creation.
The solution is to use Files.createTempFile https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/nio/file/Files.html#createTempFile(java.lang.String,java.lang.String,java.nio.file.attribute.FileAttribute...) instead.
We recommend that all users upgrade to the latest version of Apache Storm.
www.openwall.com/lists/oss-security/2023/11/23/1
github.com/apache/storm
github.com/apache/storm/commit/b778125a17ce7497d80aea1e339f3a282aeeb65a
github.com/apache/storm/pull/3582
issues.apache.org/jira/browse/STORM-3123
lists.apache.org/thread/88oc1vqfjtr29cz5xts0v2wm5pmhbm0l
nvd.nist.gov/vuln/detail/CVE-2023-43123
www.openwall.com/lists/oss-security/2023/11/23/1
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
AI Score
Confidence
High
EPSS
Percentile
5.1%