Riskcovery

CVE-2026-15722

389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing

State
Published
Severity
7.5 High
Published
Jul 31, 2026
Updated
Oct 8, 2026
Reserved
Jul 14, 2026

Read the record on cve.org

Description

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat

Weaknesses

  • CWE-121 Stack-based Buffer Overflow

Affected Products

ProductVersions
Red Hat Directory Server 11.5 E4S for RHEL 8Red Hat
  • 8060020260908152739.0ca98e7e and laterNot affected
Red Hat Directory Server 11.7 E4S for RHEL 8Red Hat
  • 8080020260806114250.f969626e and laterNot affected
Red Hat Directory Server 11.9 for RHEL 8Red Hat
  • 8100020260803140625.37ed7c03 and laterNot affected
Red Hat Directory Server 12.2 E4S for RHEL 9Red Hat
  • 9020020260730155601.1674d574 and laterNot affected
Red Hat Directory Server 12.4 E4S for RHEL 9Red Hat
  • 9040020260810131422.1674d574 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
  • 0:3.2.0-9.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat
  • 0:3.0.6-20.el10_0 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat
  • 0:1.3.11.1-14.el7_9 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 8100020260806150504.25e700aa and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat
  • 8040020260803141511.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat
  • 8040020260803141511.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat
  • 8060020260806120442.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat
  • 8060020260806120442.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat
  • 8080020260806114228.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat
  • 8080020260806114228.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:2.8.0-9.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat
  • 0:2.2.4-20.el9_2 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat
  • 0:2.4.5-27.el9_4 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat
  • 0:2.6.1-23.el9_6 and laterNot affected
Red Hat Directory Server 12Red Hat
    Red Hat Directory Server 13Red Hat
      Red Hat Enterprise Linux 6Red Hat

        References

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