Title: Popper Insecure Temporary File Creation Vulnerability
Severity: MODERATE
Description:
Popper is a network messenger application for KDE.
Popper creates temporary files in an insecure manner. The issue exists in the 'popper-send.sh' script. An attacker with local access could potentially exploit this issue to overwrite files in the context of the application. The vulnerability is due to the program creating temporary files with a predictable name ('.popper-new') in the '/tmp' directory.
A local attacker would most likely take advantage of this vulnerability by creating a malicious symbolic link in a directory where the temporary files will be created. When the program attempts to perform an operation on a temporary file, it will instead perform the operation on the file pointed to by the malicious symbolic link.
Exploitation would most likely result in loss of data or a denial of service if critical files are overwritten in the attack. There is also an unconfirmed potential for privilege escalation if the attacker can write custom data in the attack.
Affected Products:
- Log4sh Log4sh 1.2.3
- Log4sh Log4sh 1.2.4
- Log4sh Log4sh 1.2.5
- Popper Popper 0.93.0
- Popper Popper 1.0.0
References:
- Log4sh: Log4sh Homepage
- Popper: Popper Homepage
- zataz: kpopper insecure temporary file creation
- zataz: log4sh insecure temporary file creation
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