Home

CVE-2018-15470

Description

An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 Operations on data structures of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.

Risk Information

Base Score
6.5
MODERATE
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.182

Associated Vulnerability

VulnerabilityOS Platform
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-debugsource-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-libs-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-libs-32bit-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-libs-debuginfo-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Desktop 12-SP3 ) xen-libs-debuginfo-32bit-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Server 12-SP3 ) xen-doc-html-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Server 12-SP3 ) xen-tools-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Server 12-SP3 ) xen-tools-debuginfo-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Server 12-SP3 ) xen-tools-domU-4.9.3_03-3.44.2.x86_64.rpmLinux
SUSE-SU-2018:3490-1(SUSE Linux Enterprise Server 12-SP3 ) xen-tools-domU-debuginfo-4.9.3_03-3.44.2.x86_64.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234