SB2017063036 - Input validation error in mosquitto (Alpine package)
Published: June 30, 2017
Security Bulletin ID
SB2017063036
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2017-7652)
The vulnerability allows a remote authenticated user to execute arbitrary code.
In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk. If there are lots of clients connected so that there are no more file descriptors/sockets available (default limit typically 1024 file descriptors on Linux), then opening the configuration file will fail.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=1010882df397e3c8f889b1f5bc658e870d5f52a6
- https://git.alpinelinux.org/aports/commit/?id=9fd49ead7922a262370c74c063833035c26ef731
- https://git.alpinelinux.org/aports/commit/?id=f61baacc21feda8c0f7177144a4dd3ee81aa7735
- https://git.alpinelinux.org/aports/commit/?id=19539511a24c68d6a70c19ae7f30e6a11736caff
- https://git.alpinelinux.org/aports/commit/?id=73a38747e43d9c0420fe000dbb786b2c02b51698