SB2017061386 - Double Free in dropbear (Alpine package)
Published: June 13, 2017
Security Bulletin ID
SB2017061386
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Double Free (CVE-ID: CVE-2017-9078)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a double free in cleanup of TCP listeners when the -a option is enabled. The vulnerability allows a remote authenticated attacker to trigger double free error and execute arbitrary code on the target system with root privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=ea5e2a6272e38458c8d64e5cb59cfc089a5c9a93
- https://git.alpinelinux.org/aports/commit/?id=9ee60284bf43844b66bb000070cc8cff672140a1
- https://git.alpinelinux.org/aports/commit/?id=b204c902de27dc4e5e9efddb3dd9af012c70e268
- https://git.alpinelinux.org/aports/commit/?id=b798fc52c6aa85782652617ee817f26a9412f861