MGASA-2021-0287
- Source
- https://advisories.mageia.org/MGASA-2021-0287.html
- Import Source
- https://advisories.mageia.org/MGASA-2021-0287.json
- JSON Data
- https://api.osv.dev/v1/vulns/MGASA-2021-0287
- Related
- Published
- 2021-06-25T14:43:41Z
- Modified
- 2021-06-25T13:32:06Z
- Summary
- Updated samba and ldb packages fix security vulnerabilities
- Details
-
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 (CVE-2020-27840).
A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity (CVE-2021-20254).
A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability (CVE-2021-20277).
Also, the samba package for Mageia 7 fixes a scriplet issue when updating.
Additionally, the sssd package has been rebuilt for the updated ldb package.
- References
-
- https://advisories.mageia.org/MGASA-2021-0287.html
- https://bugs.mageia.org/show_bug.cgi?id=28686
- https://bugs.mageia.org/show_bug.cgi?id=28042
- https://www.samba.org/samba/security/CVE-2020-27840.html
- https://www.samba.org/samba/security/CVE-2021-20277.html
- https://www.samba.org/samba/security/CVE-2021-20254.html
- Credits
-
-
- Mageia - COORDINATOR
-
Affected packages
Mageia:8 / ldb
Package
- Name
- ldb
- Purl
- pkg:rpm/mageia/ldb?distro=mageia-8
Mageia:8 / samba
Package
- Name
- samba
- Purl
- pkg:rpm/mageia/samba?distro=mageia-8
Mageia:8 / sssd
Package
- Name
- sssd
- Purl
- pkg:rpm/mageia/sssd?distro=mageia-8
Mageia:7 / ldb
Package
- Name
- ldb
- Purl
- pkg:rpm/mageia/ldb?distro=mageia-7
Mageia:7 / samba
Package
- Name
- samba
- Purl
- pkg:rpm/mageia/samba?distro=mageia-7
Mageia:7 / sssd
Package
- Name
- sssd
- Purl
- pkg:rpm/mageia/sssd?distro=mageia-7