Bug 2485427 (CVE-2026-11785) - CVE-2026-11785 389-ds-base: 389-ds-base: partial stack address information leak via ber_printf type confusion in SSO token handler
Summary: CVE-2026-11785 389-ds-base: 389-ds-base: partial stack address information le...
Keywords:
Status: NEW
Alias: CVE-2026-11785
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-05 12:25 UTC by OSIDB Bzimport
Modified: 2026-06-09 12:53 UTC (History)
11 users (show)

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Description OSIDB Bzimport 2026-06-05 12:25:20 UTC 
A type confusion bug in extop_handle_ldapssotoken_request() (extendop.c) passes a stack pointer (&rc) to ber_printf with format 'i' which expects an integer. The low 32 bits of a stack address are encoded into every SSO token LDAP extended operation response.

Any authenticated non-administrator user can extract partial stack address information. SSO token feature enabled by default with auto-generated secret (Issue #1797). PoC confirmed on Fedora 42: INTEGER=0x8e7faed8 leaked. Reduces stack ASLR entropy but is not a full bypass.
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