| Name | CVE-2018-16851 |
| Description | Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1607-1, DSA-4345-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| samba (PTS) | bullseye (security), bullseye | 2:4.13.13+dfsg-1~deb11u6 | fixed |
| bookworm, bookworm (security) | 2:4.17.12+dfsg-0+deb12u1 | fixed | |
| trixie | 2:4.20.2+dfsg-7 | fixed | |
| sid | 2:4.20.2+dfsg-10 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| samba | source | jessie | 2:4.2.14+dfsg-0+deb8u11 | DLA-1607-1 | ||
| samba | source | stretch | 2:4.5.12+dfsg-2+deb9u4 | DSA-4345-1 | ||
| samba | source | (unstable) | 2:4.9.2+dfsg-2 |
https://www.samba.org/samba/security/CVE-2018-16851.html