VulnerabilityModified
CVE-2023-5215
This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.
MEDIUM 6.5EPSS 0.75%
Does this matter?
Lower severity and a low EPSS score (0.75%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.75% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-241, CWE-252
- Affected
- redhat/libnbd · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue Tracking, Vendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploit, Patch
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue Tracking, Vendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.