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Mallory
CriticalPublic exploit

Authentication Bypass in OpenIKED (OpenBSD through 6.7)

IdentifiersCVE-2020-16088CWE-287· Improper Authentication

CVE-2020-16088 is an authentication bypass vulnerability in the iked component of OpenIKED, as used in OpenBSD through version 6.7. The vulnerability arises from incorrect logic in the ca.c file when checking whether a public key matches, allowing an attacker to bypass authentication mechanisms.

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For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An attacker can bypass authentication in OpenIKED, potentially establishing unauthorized VPN connections or impersonating legitimate users, undermining the security guarantees of IPsec tunnels.

Mitigation

If you can’t patch tonight, do this now.

As a temporary measure, restrict access to the affected iked service to trusted networks only, and monitor for unauthorized connection attempts. However, full mitigation requires patching the underlying vulnerability.

Remediation

Patch, then assume compromise.

Upgrade to a version of OpenIKED with the corrected logic in ca.c for public key matching. Ensure all systems running OpenBSD through 6.7 are patched or updated to a version where this vulnerability is fixed.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
OpenbsdOpenbsdoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

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