QID 670896

QID 670896: EulerOS Security Update for libldb (EulerOS-SA-2021-1984)

An extensible library that implements an LDAP like API to access remote LDAP servers, or use local tdb databases. Security Fix(es): 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) 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)
Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    The Vendor has released a security update to fix the vulnerability. For more information please visit EulerOS-SA-2021-1984 for updates and patch information
    Vendor References

    CVEs related to QID 670896

    CVE-2020-27840 | CVE-2021-20277 |
    Software Advisories
    Advisory ID Software Component Link
    EulerOS-SA-2021-1984 EulerOS V2.0SP8 URL Logo developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-1984
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