In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
Published
CVE disclosed publicly
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Added to this platform
AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L
2
Affected Products
3
References
gnupg / gnupg +1 more
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L
Exploitability
Impact