Flaw in libvirt RPC Library APIs Allows Denial of Service Attack
CVE-2024-2494

6.2MEDIUM

Key Information:

Vendor
Red Hat
Status
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Vendor
CVE Published:
21 March 2024

Summary

A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.

Affected Version(s)

Red Hat Enterprise Linux 8 8100020240409073027.489197e6

Red Hat Enterprise Linux 8 8100020240409073027.489197e6

Red Hat Enterprise Linux 9 0:10.0.0-6.2.el9_4

References

https://access.redhat.com/errata/RHSA-2024:2560
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3253
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2024-2494
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Alexander Kuznetsov (ALT Linux Team) for reporting this issue.
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