{"id":"UBUNTU-CVE-2022-45939","details":"GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the ctags program. For example, a victim may use the \"ctags *\" command (suggested in the ctags documentation) in a situation where the current working directory has contents that depend on untrusted input.","modified":"2026-05-20T16:06:46.682279903Z","published":"2022-11-28T06:15:00Z","related":["USN-5781-1","USN-7027-1"],"upstream":["CVE-2022-45939"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-45939"},{"type":"REPORT","url":"https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d48bb4874bc6cd3e69c7a15fc3c91cc141025c51"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5781-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-45939"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7027-1"}],"affected":[{"package":{"name":"xemacs21","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xemacs21?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["21.4.22-4ubuntu3","21.4.22-14ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-bin"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-mule"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-mule-canna-wnn"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-nomule"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-support"},{"binary_version":"21.4.22-14ubuntu1","binary_name":"xemacs21-supportel"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-45939.json"}},{"package":{"name":"xemacs21-packages","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xemacs21-packages?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2009.02.17.dfsg.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"2009.02.17.dfsg.2-2","binary_name":"xemacs21-basesupport"},{"binary_version":"2009.02.17.dfsg.2-2","binary_name":"xemacs21-basesupport-el"},{"binary_version":"2009.02.17.dfsg.2-2","binary_name":"xemacs21-mulesupport"},{"binary_version":"2009.02.17.dfsg.2-2","binary_name":"xemacs21-mulesupport-el"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-45939.json"}},{"package":{"name":"emacs24","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/emacs24?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.5+1-6ubuntu1.1+esm1"}]}],"versions":["24.5+1-1ubuntu2","24.5+1-1ubuntu4","24.5+1-1ubuntu5","24.5+1-1ubuntu6","24.5+1-1ubuntu7","24.5+1-6ubuntu1","24.5+1-6ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24"},{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24-bin-common"},{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24-common"},{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24-el"},{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24-lucid"},{"binary_version":"24.5+1-6ubuntu1.1+esm1","binary_name":"emacs24-nox"}],"availability":"Available 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https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-45939.json"}},{"package":{"name":"xemacs21","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/xemacs21?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["21.4.24-4ubuntu1","21.4.24-5ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-bin"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-mule"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-mule-canna-wnn"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-nomule"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-support"},{"binary_version":"21.4.24-5ubuntu1","binary_name":"xemacs21-supportel"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-45939.json"}},{"package":{"name":"xemacs21-packages","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/xemacs21-packages?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2009.02.17.dfsg.2-4"],"ecosystem_specific":{"binaries":[{"binary_version":"2009.02.17.dfsg.2-4","binary_name":"xemacs21-basesupport"},{"binary_version":"2009.02.17.dfsg.2-4","binary_name":"xemacs21-basesupport-el"},{"binary_version":"2009.02.17.dfsg.2-4","binary_name":"xemacs21-mulesupport"},{"binary_version":"2009.02.17.dfsg.2-4","binary_name":"xemacs21-mulesupport-el"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-45939.json"}},{"package":{"name":"emacs","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/emacs?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:26.3+1-1ubuntu2+esm1"}]}],"versions":["1:26.3+1-1ubuntu1","1:26.3+1-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-bin-common"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-common"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-el"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-gtk"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-lucid"},{"binary_version":"1:26.3+1-1ubuntu2+esm1","binary_name":"emacs-nox"}],"availability":"Available 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