SB2020052146 - Use-after-free in iproute2 (Alpine package)
Published: May 21, 2020
Security Bulletin ID
SB2020052146
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) Use-after-free (CVE-ID: CVE-2019-20795)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the get_netnsid_from_name() function in ip/ipnetns.c. A remote attacker can send specially crafted data to the application, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=3ae6bad39b1a131bc419fb4e9088f4b12fa07aa2
- https://git.alpinelinux.org/aports/commit/?id=635fd56d923cf83e6dcc44c1547073ff890f3c89
- https://git.alpinelinux.org/aports/commit/?id=0fce385f21ed47e1d3b7c05a78bd4c77f0521759
- https://git.alpinelinux.org/aports/commit/?id=ccb23306bc8a14b6aba9fbe76b0d88267b02e4c0