Memory leak in Xen - CVE-2019-17340
Published: March 6, 2019 / Updated: July 28, 2020
Vulnerability identifier: #VU17907
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17340
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform DoS attack or escalate privileges on the target system.
The vulnerability exists due memory leak when processing grant table transfer requests. A local user from one domain can gain access to data stored in memory that belong to another domain or consume all available memory resources on the system.
Successful exploitation of the vulnerability may allow an attacker to perform a denial of service attack or, in certain cases, to allow privilege escalation.
Affected software
Xen
Debian Linux
xen (Alpine package)
xen (Debian package)
Debian Linux
xen (Alpine package)
xen (Debian package)
How to mitigate CVE-2019-17340
Apply the following patches:
xen (Debian package) - addressed in versions 4.8.5.final+shim4.10.4-1+deb9u12, 4.11.3+24-g14b62ab3e5-1~deb10u1