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CVE-2019-13050 is an uncontrolled resource-consumption vulnerability affecting the interaction of SKS keyserver software through 1.2.0 and GnuPG through 2.2.16. The SKS network retains certificate signatures and permits attackers to append extremely large numbers of signatures to an OpenPGP certificate. When GnuPG imports, refreshes, verifies, or otherwise processes a poisoned certificate retrieved from an SKS keyserver, it may be unable to process the excessive signature set, causing the local per-user GnuPG installation to hang or become persistently unusable.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A persistent denial-of-service vulnerability in GnuPG caused by interaction with SKS keyserver code, enabling a certificate-spamming attack.
Unknown
A GnuPG denial-of-service vulnerability in the interaction between SKS keyserver code and GnuPG that permits certificate spamming, causing persistent denial of service.
A persistent denial-of-service vulnerability affecting GnuPG installations that retrieve OpenPGP certificates from the SKS keyserver network. Certificate poisoning/spamming can cause GnuPG to hang while processing certificates containing very large numbers of signatures, preventing key import and package-signature verification.
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.