Heap-based Buffer Overflow Affecting python3-lib389 package, versions <0:1.4.3.39-25.module+el8.10.0+24462+1b66c107


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.63% (46th percentile)

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  • Snyk IDSNYK-CENTOS8-PYTHON3LIB389-17879925
  • published7 Jul 2026
  • disclosed7 Jul 2026

Introduced: 7 Jul 2026

NewCVE-2026-11610  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Centos:8 python3-lib389 to version 0:1.4.3.39-25.module+el8.10.0+24462+1b66c107 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-lib389 package and not the python3-lib389 package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.

CVSS Base Scores

version 3.1