Title: MySpell Insecure Temporary File Creation Vulnerability
Severity: LOW
Description:
MySpell is a spell checker.
The application creates temporary files in an insecure manner.
The issue occurs because the '/usr/bin/i2myspell' script creates files in an insecure manner. An attacker with local access could potentially exploit this issue to perform symlink attacks, overwriting arbitrary files in the context of the affected application/
Successfully mounting a symlink attack may allow the attacker to delete or corrupt sensitive files, which may result in a denial of service. Other attacks may also be possible.
MySpell 3.1 is vulnerable; other versions may also be affected.
Affected Products:
- Debian Linux 4.0
- Debian Linux 4.0 alpha
- Debian Linux 4.0 amd64
- Debian Linux 4.0 arm
- Debian Linux 4.0 hppa
- Debian Linux 4.0 ia-32
- Debian Linux 4.0 ia-64
- Debian Linux 4.0 m68k
- Debian Linux 4.0 mips
- Debian Linux 4.0 mipsel
- Debian Linux 4.0 powerpc
- Debian Linux 4.0 s/390
- Debian Linux 4.0 sparc
- MySpell MySpell 3.1
References:
- Dmitry E. Oboukhov: Debian Bug report logs - #496358
- Dmitry E. Oboukhov: Insecure tmp files in Debian packages
- MySpell: MySpell Homepage
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