PT-2021-7712 · Unknown+6 · 389-Ds-Base+6

Cedric Buissart · Published 2021-03-30 · Updated 2021-05-28 · CVE-2021-3480

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions 389-ds-base versions prior to 0.56.7

Description A flaw was found in slapi-nis that could allow an unauthenticated attacker to crash the 389-ds-base directory server due to a NULL pointer dereference during the parsing of the Binding DN. The highest threat from this issue is to system availability. This could be exploited by a remote attacker to cause a denial of service.

Recommendations For versions prior to 0.56.7, update to version 0.56.7 or later to resolve the issue. As a temporary workaround, consider restricting access to the slapi-nis component to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2021:1983

ALT-PU-2021-1827

ALT-PU-2021-1842

ALT-PU-2021-1854

BDU:2023-01691

CESA-2021_1983

CVE-2021-3480

RHSA-2021:1983

RHSA-2021:2026

RHSA-2021:2027

RHSA-2021:2032

RHSA-2021_1983

RHSA-2021_2032

RLSA-2021:1983

Affected Products

389-Ds-Base

Alt Linux

Almalinux

Astra Linux

Centos

Red Hat

Rocky Linux

References · 26

• https://ubuntu.com/security/CVE-2021-3480 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:1983 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3480 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1944640 · Patch
• https://linux.oracle.com/errata/ELSA-2021-2032.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3480 · Security Note
• https://errata.almalinux.org/8/ALSA-2021-1983.html · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2021:1983 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVQCDRQRFHXVR3Z3FQYM3UMC7QZUDDRJ · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-3480 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-3480 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-1983.html · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:1983 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2023-0303SE17MD · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-3480 · Vendor Advisory