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CVE-2026-18355: Red Hat Directory Server 11.5 E4S for RHEL 8, грешка в

7.5

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, при специфични условия, с обикновен потребителски вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), the wrapped-record length read from the wire is validated only against an upper bound. A small wire length (0, 1, or 2) produces an encrypted_buffer_count below the already-consumed encrypted_buffer_offset, causing an unsigned subtraction underflow in sasl_io_read_packet(). PR_Recv is then requested to read approximately 4 GiB into a 1024-byte heap buffer, resulting in a heap buffer overflow with attacker-controlled content. After a successful SASL bind with integrity protection (SSF > 0), a remote authenticated attacker can cause a denial of service or potentially achieve remote code execution. This flaw is distinct from CVE-2026-11774, whose fix only guards against upper-bound overflow.

Засегнати продукти

  • Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8: 8060020260908152739.0ca98e7e преди *
  • Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8: 8080020260903102346.f969626e преди *
  • Red Hat Red Hat Directory Server 11.9 for RHEL 8: 8100020260904171440.37ed7c03 преди *
  • Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9: 9020020260903155914.1674d574 преди *
  • Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9: 9040020260903102623.1674d574 преди *
  • Red Hat Red Hat Enterprise Linux 10: 0:3.2.0-10.el10_2 преди *
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support: 0:3.0.6-21.el10_0 преди *
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support: 0:1.3.11.1-15.el7_9 преди *
  • Red Hat Red Hat Enterprise Linux 8: 8100020260904155442.25e700aa преди *
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: 8040020260901171549.96015a92 преди *
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: 8040020260901171549.96015a92 преди *
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: 8060020260901145727.824efc52 преди *
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: 8060020260901145727.824efc52 преди *
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: 8080020260831180218.6dbb3803 преди *
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: 8080020260831180218.6dbb3803 преди *
  • Red Hat Red Hat Enterprise Linux 9: 0:2.8.0-10.el9_8 преди *
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: 0:2.2.4-22.el9_2 преди *
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: 0:2.4.5-29.el9_4 преди *
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: 0:2.6.1-24.el9_6 преди *
  • Red Hat Red Hat Directory Server 13.2: 1788851765 преди *
  • Red Hat Red Hat Directory Server 12
  • Red Hat Red Hat Directory Server 13
  • Red Hat Red Hat Enterprise Linux 6

Вид слабост

История

  • 7 септември 2026 Публикувано

Други уязвимости в Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

Първоизточници

CVE-2026-18355: Red Hat Directory Server 11.5 E4S for RHEL 8, грешка в | freedomonline.bg