Vulnerability in Red Hat Enterprise Linux 6
CVE-2024-4418
A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 8100020240606142719.489197e6
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat Enterprise Linux 9 — versions 0:10.0.0-6.6.el9_4
- Red Hat Enterprise Linux 9.2 Extended Update Support — versions 0:9.0.0-10.7.el9_2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:4351 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:4432 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:4757 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2024-4418 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-4418?
- CVE-2024-4418 is a medium-severity vulnerability in Red Hat Enterprise Linux 6, classified under CWE-562. CVSS score: 6.2/10. Published 2024-05-08.
- How severe is CVE-2024-4418?
- Medium severity. CVSS v3 base score is 6.2 out of 10.
- Is CVE-2024-4418 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.