SB2019032140 - Incorrect calculation in libseccomp (Alpine package)
Published: March 21, 2019
Security Bulletin ID
SB2019032140
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2019-9893)
The vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to incorrect 64-bit syscall argument comparison when using arithmetic operators, such as LT, GT, LE, or GE. A local user can bypass seccomp filters and gain elevated privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=bc5bdeaee9133ca6c5ef9268c842fc09e5bb573e
- https://git.alpinelinux.org/aports/commit/?id=f94bff9e1a79ee759e1f036f8acc02f63fcff6a8
- https://git.alpinelinux.org/aports/commit/?id=9092d9ca814a141dbcee7a97070ff4bd93f78e10
- https://git.alpinelinux.org/aports/commit/?id=aa251917a923821de5ed0a20dabdb1a44f2adc00
- https://git.alpinelinux.org/aports/commit/?id=d7288e99061f0ea9be587cba5712912f10de33f9