{"id":"USN-5766-1","summary":"heimdal vulnerability","details":"It was discovered that Heimdal did not properly manage memory when\nnormalizing Unicode. An attacker could possibly use this issue to\ncause a denial of service.\n","modified":"2026-06-29T13:50:43.813166867Z","published":"2022-12-07T23:29:35Z","related":["UBUNTU-CVE-2022-41916"],"upstream":["CVE-2022-41916","UBUNTU-CVE-2022-41916"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5766-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-41916"}],"affected":[{"package":{"name":"heimdal","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/heimdal?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"}]}],"versions":["1.6~git20120403+dfsg1-3ubuntu0.1","1.6~git20120403+dfsg1-3ubuntu0.2","1.6~git20131207+dfsg-1ubuntu1","1.6~git20131207+dfsg-1ubuntu1.1","1.6~git20131207+dfsg-1ubuntu1.2","1.6~git20131207+dfsg-1ubuntu1.2+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"heimdal-clients","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"heimdal-clients-x","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"heimdal-docs","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"heimdal-kcm","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"heimdal-kdc"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"heimdal-multidev"},{"binary_name":"heimdal-servers","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"heimdal-servers-x","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"libasn1-8-heimdal"},{"binary_name":"libgssapi3-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libhcrypto4-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libhdb9-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libheimbase1-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libheimntlm0-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"libhx509-5-heimdal"},{"binary_name":"libkadm5clnt7-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libkadm5srv8-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libkafs0-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"libkdc2-heimdal"},{"binary_name":"libkrb5-26-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libotp0-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_name":"libroken18-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"},{"binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2","binary_name":"libsl0-heimdal"},{"binary_name":"libwind0-heimdal","binary_version":"1.6~git20131207+dfsg-1ubuntu1.2+esm2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2022-41916","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5766-1.json"}},{"package":{"name":"heimdal","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/heimdal?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"}]}],"versions":["1.6~rc2+dfsg-10ubuntu1","1.7~git20150920+dfsg-4ubuntu1","1.7~git20150920+dfsg-4ubuntu1.16.04.1","1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"heimdal-clients","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"heimdal-docs","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"heimdal-kcm","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2","binary_name":"heimdal-kdc"},{"binary_name":"heimdal-multidev","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"heimdal-servers","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libasn1-8-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libgssapi3-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libhcrypto4-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libhdb9-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libheimbase1-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libheimntlm0-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2","binary_name":"libhx509-5-heimdal"},{"binary_name":"libkadm5clnt7-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2","binary_name":"libkadm5srv8-heimdal"},{"binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2","binary_name":"libkafs0-heimdal"},{"binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2","binary_name":"libkdc2-heimdal"},{"binary_name":"libkrb5-26-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libotp0-heimdal","binary_version":"1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2"},{"binary_name":"libroken18-heimdal","binary_version":"1.7~git20150920+dfsg-4ub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with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2022-41916","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5766-1.json"}},{"package":{"name":"heimdal","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/heimdal?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.5.0+dfsg-1ubuntu0.2"}]}],"versions":["7.4.0.dfsg.1-2","7.5.0+dfsg-1","7.5.0+dfsg-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription 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