VulnerabilityModified
CVE-2023-5574
A use-after-free flaw was found in xorg-x11-server-Xvfb.
HIGH 7.0EPSS 0.62%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.62% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- x.org/x server · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2024:2298
- https://access.redhat.com/security/cve/CVE-2023-5574Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2244735Issue Tracking, Third Party Advisory
- https://lists.x.org/archives/xorg-announce/2023-October/003430.htmlPatch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2024:2298
- https://access.redhat.com/security/cve/CVE-2023-5574Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2244735Issue Tracking, Third Party Advisory
- https://lists.x.org/archives/xorg-announce/2023-October/003430.htmlPatch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20231130-0004/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.