SB2019070321 - Improper access control in libvirt (Alpine package)
Published: July 3, 2019
Security Bulletin ID
SB2019070321
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) Improper access control (CVE-ID: CVE-2019-10166)
The vulnerability allows a local authenticated user to execute arbitrary code.
It was discovered that libvirtd, versions 4.x.x before 4.10.1 and 5.x.x before 5.4.1, would permit readonly clients to use the virDomainManagedSaveDefineXML() API, which would permit them to modify managed save state files. If a managed save had already been created by a privileged user, a local attacker could modify this file such that libvirtd would execute an arbitrary program when the domain was resumed.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=0a50437d8b8d5a583b96d5807d95e6b549772ba3
- https://git.alpinelinux.org/aports/commit/?id=1d40d3f92f355ffcb43aad049e0a560d60d31e16
- https://git.alpinelinux.org/aports/commit/?id=011b9d5c5ae0af504ab1bb28a042d56676636a00
- https://git.alpinelinux.org/aports/commit/?id=8cad441d0bb3d51026cb0231485848ce9a821e6a
- https://git.alpinelinux.org/aports/commit/?id=911332961e1fa7187cf3869595066bb18d226e27
- https://git.alpinelinux.org/aports/commit/?id=2d0114c907c5b85d78a75d70bd60c5544ed8eedb
- https://git.alpinelinux.org/aports/commit/?id=d8c86688b6afbadd18a78b88a430ed4cabe78e7c