UpHeron
All vulnerabilities

Servers and applications

CVE-2021-20277

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.

Severity
High 7.5
Published
12 May 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.12.13, 4.13.6, 4.14.1
Sources
NVD

Affected software

SoftwareAffected versions
SambaServers and applications · cpe:a:samba:samba
  • From 4.0.0 before 4.12.13
  • From 4.13.0 before 4.13.6
  • From 4.14.0 before 4.14.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-20277
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-20277