{"id":"DEBIAN-CVE-2025-13470","details":"In RNP version 0.18.0 a refactoring regression causes the symmetric  session key used for Public-Key Encrypted Session Key (PKESK) packets to  be left uninitialized except for zeroing, resulting in it always being  an all-zero byte array.  Any data encrypted using public-key encryption  in this release can be decrypted trivially by supplying an all-zero  session key, fully compromising confidentiality.  The vulnerability affects only public key encryption (PKESK packets).  Passphrase-based encryption (SKESK packets) is not affected.  Root cause: Vulnerable session key buffer used in PKESK packet generation.    The defect was introduced in commit `7bd9a8dc356aae756b40755be76d36205b6b161a` where initialization  logic inside `encrypted_build_skesk()` only randomized the key for the  SKESK path and omitted it for the PKESK path.","modified":"2026-09-01T20:05:40.965540745Z","published":"2025-11-21T17:15:50.473Z","upstream":["CVE-2025-13470"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-13470"}],"affected":[{"package":{"name":"rnp","ecosystem":"Debian:14","purl":"pkg:deb/debian/rnp?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.18.1-1"}]}],"versions":["0.17.1-1","0.18.0-1","0.18.0-2","0.18.0-3","0.18.0-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-13470.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:H/U:Red"}]}