{"action":"Upgrade libssh to 0.5.3-1 or later.","affected":[{"fixed":"0.5.3-1","introduced":"0"}],"component":"libssh","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["0.5.3-1"],"id":"tcs_01M5NA53M87XJ43X7NEQ0C02JT","modified_at":"2026-10-23T17:47:30.031246503Z","published_at":"2012-11-30T22:55:01.643Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2012-4559","https://security-tracker.debian.org/tracker/CVE-2012-4559"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2012-4559#Debian:13/libssh","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2012-4559"}],"summary":"Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 funct"}