SB2017110225 - Fedora 25 update for rpm
Published: November 2, 2017 Updated: April 24, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Link following (CVE-ID: CVE-2017-7500)
The vulnerability allows a local authenticated user to execute arbitrary code.
It was found that rpm did not properly handle RPM installations when a destination path was a symbolic link to a directory, possibly changing ownership and permissions of an arbitrary directory, and RPM files being placed in an arbitrary destination. An attacker, with write access to a directory in which a subdirectory will be installed, could redirect that directory to an arbitrary location and gain root privilege.
2) Link following (CVE-ID: CVE-2017-7501)
The vulnerability allows a local authenticated user to execute arbitrary code.
It was found that versions of rpm before 4.13.0.2 use temporary files with predictable names when installing an RPM. An attacker with ability to write in a directory where files will be installed could create symbolic links to an arbitrary location and modify content, and possibly permissions to arbitrary files, which could be used for denial of service or possibly privilege escalation.
Remediation
Install update from vendor's website.