CVE-2016-9379 — Improper Input Validation in Citrix Xenserver

CWE-20 — Improper Input Validation8 documents7 sources
Severity
7.9HIGHNVD
EPSS
0.1%
top 72.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENCitrix Xenserver
Timeline
PublishedJan 23
Latest updateMay 17

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.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:NExploitability: 1.5 | Impact: 5.8

Affected Packages2 packages

▶Debianxen/xen< 4.8.0-1+3
▶NVDcitrix/xenserver4 versions+3

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗Patch: support.citrix.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-x6jv-rqxv-vmxw: The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or del↗2022-05-17
▶
OSV
CVE-2016-9379: The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or del↗2017-01-23
▶
CVEList
CVE-2016-9379: The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or del↗2017-01-23
▶

📋Vendor Advisories

2
Red Hat
xen: delimiter injection vulnerabilities in pygrub (XSA-198)↗2016-11-22
▶
Debian
CVE-2016-9379: xen - The pygrub boot loader emulator in Xen, when S-expression output format is reque...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-9377 CVE-2016-9378 CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9384 CVE-2016-9385 CVE-2016-9386 xen: various flaws [fedora-all]↗2016-11-22
▶
Bugzilla
CVE-2016-9379 CVE-2016-9380 xsa198 xen: delimiter injection vulnerabilities in pygrub (XSA-198)↗2016-11-08
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CVE-2016-9379 — Improper Input Validation in Citrix | cvebase