cve-2018-16841
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
EPSS score ?
Summary
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | http://www.securityfocus.com/bid/106023 | VDB Entry, Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://security.gentoo.org/glsa/202003-52 | Third Party Advisory | |
| secalert@redhat.com | https://security.netapp.com/advisory/ntap-20181127-0001/ | Third Party Advisory | |
| secalert@redhat.com | https://usn.ubuntu.com/3827-1/ | Third Party Advisory | |
| secalert@redhat.com | https://usn.ubuntu.com/3827-2/ | Third Party Advisory | |
| secalert@redhat.com | https://www.debian.org/security/2018/dsa-4345 | Third Party Advisory | |
| secalert@redhat.com | https://www.samba.org/samba/security/CVE-2018-16841.html | Patch, Vendor Advisory |
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.