| Name | CVE-2020-10730 |
| Description | A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4. Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability. |
| 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-2463-1, DSA-4884-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ldb (PTS) | jessie, jessie (lts) | 2:1.1.20-0+deb8u3 | fixed |
| stretch (security), stretch (lts), stretch | 2:1.1.27-1+deb9u2 | fixed |
| buster, buster (security) | 2:1.5.1+really1.4.6-3+deb10u1 | fixed |
| bullseye (security), bullseye | 2:2.2.3-2~deb11u2 | fixed |
| samba (PTS) | jessie, jessie (lts) | 2:4.2.14+dfsg-0+deb8u15 | fixed |
| stretch (security), stretch (lts), stretch | 2:4.5.16+dfsg-1+deb9u4 | fixed |
| buster | 2:4.9.5+dfsg-5+deb10u3 | vulnerable |
| buster (security) | 2:4.9.5+dfsg-5+deb10u5 | vulnerable |
| bullseye | 2:4.13.13+dfsg-1~deb11u5 | fixed |
| bullseye (security) | 2:4.13.13+dfsg-1~deb11u6 | fixed |
| bookworm (security), bookworm | 2:4.17.12+dfsg-0+deb12u1 | fixed |
| trixie | 2:4.19.6+dfsg-1 | fixed |
| sid | 2:4.19.6+dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ldb | source | jessie | (not affected) | | | |
| ldb | source | stretch | (not affected) | | | |
| ldb | source | buster | 2:1.5.1+really1.4.6-3+deb10u1 | | DSA-4884-1 | |
| ldb | source | (unstable) | 2:2.1.4-1 | | | |
| samba | source | jessie | (not affected) | | | |
| samba | source | stretch | 2:4.5.16+dfsg-1+deb9u3 | | DLA-2463-1 | |
| samba | source | (unstable) | 2:4.12.5+dfsg-1 | | | |
Notes
[stretch] - ldb <not-affected> (Vulnerable code introduced later)
[buster] - samba <postponed> (Minor issue, fix along in next DSA)
https://www.samba.org/samba/security/CVE-2020-10730.html
https://bugzilla.samba.org/show_bug.cgi?id=14364
https://git.samba.org/?p=samba.git;a=commitdiff;h=9dd458956d7af1b4bbe505ba2ab72235e81c27d0 (for ldb)
[jessie] - ldb <not-affected> (Vulnerable code introduced later)
[jessie] - samba <not-affected> (Vulnerable code introduced in 4.5)