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Debian Security Advisory DSA-4884-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
April 02, 2021                        https://www.debian.org/security/faq
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Package        : ldb
CVE ID         : CVE-2020-10730 CVE-2020-27840 CVE-2021-20277
Debian Bug     : 985935 985936

Multiple vulnerabilities have been discovered in ldb, a LDAP-like
embedded database built on top of TDB.

CVE-2020-10730

    Andrew Bartlett discovered a NULL pointer dereference and
    use-after-free flaw when handling 'ASQ' and 'VLV' LDAP controls and
    combinations with the LDAP paged_results feature.

CVE-2020-27840

    Douglas Bagnall discovered a heap corruption flaw via crafted
    DN strings.

CVE-2021-20277

    Douglas Bagnall discovered an out-of-bounds read vulnerability in
    handling LDAP attributes that contains multiple consecutive
    leading spaces.

For the stable distribution (buster), these problems have been fixed in
version 2:1.5.1+really1.4.6-3+deb10u1.

We recommend that you upgrade your ldb packages.

For the detailed security status of ldb please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/ldb

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org