VAR-201009-0269
Vulnerability from variot - Updated: 2023-12-18 12:39Multiple integer signedness errors in smb_subr.c in the netsmb module in the kernel in NetBSD 5.0.2 and earlier, FreeBSD, and Apple Mac OS X allow local users to cause a denial of service (panic) via a negative size value in a /dev/nsmb ioctl operation, as demonstrated by a (1) SMBIOC_LOOKUP or (2) SMBIOC_OPENSESSION ioctl call. Multiple BSD kernels are prone to multiple local denial-of-service vulnerabilities because they fail to properly verify signedness of user-supplied values. Attackers can exploit these issues to cause the kernel to panic, denying service to legitimate users. Given the nature of these issues, attackers may be able to execute arbitrary code, but this has not been confirmed. These issues affect versions prior to the 'netsmb' kernel module 1.35 on NetBSD, FreeBSD, and Apple OS X where 'netsmb' is available as a kernel extension. NetBSD/FreeBSD/Apple Mac OS X are all operating systems based on the BSD system. This vulnerability has been confirmed in the ioctl response of (1) SMBIOC_LOOKUP or (2) SMBIOC_OPENSESSION
Show details on source website{
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"data": "Multiple integer signedness errors in smb_subr.c in the netsmb module in the kernel in NetBSD 5.0.2 and earlier, FreeBSD, and Apple Mac OS X allow local users to cause a denial of service (panic) via a negative size value in a /dev/nsmb ioctl operation, as demonstrated by a (1) SMBIOC_LOOKUP or (2) SMBIOC_OPENSESSION ioctl call. Multiple BSD kernels are prone to multiple local denial-of-service vulnerabilities because they fail to properly verify signedness of user-supplied values. \nAttackers can exploit these issues to cause the kernel to panic, denying service to legitimate users. Given the nature of these issues, attackers may be able to execute arbitrary code, but this has not been confirmed. \nThese issues affect versions prior to the \u0027netsmb\u0027 kernel module 1.35 on NetBSD, FreeBSD, and Apple OS X where \u0027netsmb\u0027 is available as a kernel extension. NetBSD/FreeBSD/Apple Mac OS X are all operating systems based on the BSD system. This vulnerability has been confirmed in the ioctl response of (1) SMBIOC_LOOKUP or (2) SMBIOC_OPENSESSION",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.