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CVE-2021-20277

CVE-2021-20277

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 4.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • samba

    Versions
    • samba 4.14.1, samba 4.13.6, samba 4.12.13: Affected

    No fix published

  • samba Debian:12

    Affected ranges
    • ECOSYSTEM: < 2:4.13.13+dfsg-1

    Update to 2:4.13.13+dfsg-1

  • samba Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:4.13.13+dfsg-1

    Update to 2:4.13.13+dfsg-1

  • samba Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:4.13.13+dfsg-1

    Update to 2:4.13.13+dfsg-1

  • ldb Ubuntu:Pro:14.04:LTS

    Versions
    • 1:1.1.15-1.1
    • 1:1.1.16-1
    • 1:1.1.16-1ubuntu0.1
    • 1:1.1.24-0ubuntu0.14.04.1
    • 1:1.1.24-0ubuntu0.14.04.2
    Affected ranges
    • ECOSYSTEM: < 1:1.1.24-0ubuntu0.14.04.2+esm1

    Update to 1:1.1.24-0ubuntu0.14.04.2+esm1

  • ldb Ubuntu:16.04:LTS

    Versions
    • 2:1.1.20-2
    • 2:1.1.21-1
    • 2:1.1.23-1
    • 2:1.1.23-1ubuntu1
    • 2:1.1.24-1ubuntu1
    • 2:1.1.24-1ubuntu3
    • 2:1.1.24-1ubuntu3.1
    Affected ranges
    • ECOSYSTEM: < 2:1.1.24-1ubuntu3.2

    Update to 2:1.1.24-1ubuntu3.2

  • ldb Ubuntu:18.04:LTS

    Versions
    • 2:1.1.29-2
    • 2:1.2.2-2
    • 2:1.2.3-1
    • 2:1.2.3-1ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 2:1.2.3-1ubuntu0.2

    Update to 2:1.2.3-1ubuntu0.2

  • ldb Ubuntu:20.04:LTS

    Versions
    • 2:1.5.5-0ubuntu2
    • 2:1.5.5-0ubuntu3
    • 2:2.0.7-4
    • 2:2.0.8-1ubuntu1
    • 2:2.0.8-2
    • 2:2.0.10-0ubuntu0.20.04.1
    • 2:2.0.10-0ubuntu0.20.04.2
    Affected ranges
    • ECOSYSTEM: < 2:2.0.10-0ubuntu0.20.04.3

    Update to 2:2.0.10-0ubuntu0.20.04.3

Original sources

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