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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-109438

3proxy 0.9.7 - 1.0.1 Uninitialized Stack Memory Disclosure via SOCKS4

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

3proxy from 0.9.7 through 1.0.1, fixed in commit 206c923, contains an uninitialized stack memory disclosure vulnerability that allows unauthenticated attackers to leak stack bytes via the SOCKS4 reply path when the external-NAT option (-Ne) is configured. Attackers can send a client probe that fails the SOCKS version check to trigger a reply containing uninitialized bytes from the sin structure, exposing high bytes of a userspace pointer that weakens ASLR protections.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

3proxy 3proxy

Default version status: unaffected

  • 0.9.7 to ≤ 1.0.1affected
  • 206c923d6cd433bd2e7196375442650c328b8bfaunaffected
pkg:github/3proxy/3proxy

References