Loading vulnerability…
CVE-2006-5051 is a signal-handler race condition in OpenSSH sshd before 4.4 that occurs in handling of the LoginGraceTime timeout. When authentication is not completed before the grace period expires, sshd processes SIGALRM and may execute cleanup logic multiple times. This race can lead to a double-free condition. The issue is primarily exposed in vulnerable OpenSSH releases earlier than 4.4p1 that were not backport-patched, and later discussion of the flaw notes that it was the basis for a regression reintroduced much later in newer OpenSSH versions. The vulnerability can be triggered remotely and is documented as causing daemon crashes; if GSSAPI authentication is enabled, the memory corruption may also be exploitable for arbitrary code execution.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An older OpenSSH vulnerability referenced for version-history context because backported fixes affect whether older OpenSSH releases are vulnerable to CVE-2024-6387.
A vulnerability example in which a signal-handler race condition leads to a double free (CWE-415).
Older OpenSSH vulnerability referenced only to define when very old OpenSSH versions remain affected by CVE-2024-6387 if prior fixes were not applied.
A previously patched OpenSSH vulnerability that was reintroduced by later changes and is referenced as the antecedent flaw related to CVE-2024-6387.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.