CVE-2020-27840
Published: 24 March 2021
A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability.
Priority
High
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
ldb Launchpad, Ubuntu, Debian |
bionic |
Released
(2:1.2.3-1ubuntu0.2)
|
| focal |
Released
(2:2.0.10-0ubuntu0.20.04.3)
|
|
| groovy |
Released
(2:2.1.4-2ubuntu0.1)
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(1:1.1.24-0ubuntu0.14.04.2+esm1)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(2:1.1.24-1ubuntu3.2)
|
|
|
samba Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not compiled)
|
| focal |
Not vulnerable
(code not compiled)
|
|
| groovy |
Not vulnerable
(code not compiled)
|
|
| precise |
Not vulnerable
(code not compiled)
|
|
| trusty |
Not vulnerable
(code not compiled)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not compiled)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | This issue is actually in the ldb package, the samba package uses the system ldb library, not the included one |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27840
- https://www.samba.org/samba/security/CVE-2020-27840.html
- https://ubuntu.com/security/notices/USN-4888-1
- https://ubuntu.com/security/notices/USN-4888-2
- NVD
- Launchpad
- Debian