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CVE-2026-109438

3proxy 0.9.7 - 1.0.1 Uninitialized Stack Memory Disclosure via SOCKS4 PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
3proxy / 3proxyaffected 0.9.7 through 1.0.1; unaffected 206c923d6cd433bd2e7196375442650c328b8bfa

CWE

CWE-908

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.