CVEvulnerability
CVE-2016-9379
7.9 HIGH
Official page ↗
- Status
- Modified
- Published
- 2017-01-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.9 HIGH — CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-20
Description
The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.
Affected configurations
• xen xen
• citrix xenserver 6.0.2
• citrix xenserver 6.2.0
• citrix xenserver 6.5
• citrix xenserver 7.0
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- http://www.securityfocus.com/bid/94473 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037347 Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-198.html Patch, Vendor Advisory
- http://xenbits.xen.org/xsa/xsa198.patch Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201612-56 security.gentoo.org
- https://support.citrix.com/article/CTX218775 Patch, Third Party Advisory
- http://www.securityfocus.com/bid/94473 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037347 Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-198.html Patch, Vendor Advisory
- http://xenbits.xen.org/xsa/xsa198.patch Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201612-56 security.gentoo.org
- https://support.citrix.com/article/CTX218775 Patch, Third Party Advisory