{"id":"ALPINE-CVE-2021-36770","details":"Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.","modified":"2026-08-27T22:18:01.637720743Z","published":"2021-08-11T23:15:07.707Z","upstream":["CVE-2021-36770"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-36770"}],"affected":[{"package":{"name":"perl","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/perl?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-r1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl-encode","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/perl-encode?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl-encode","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/perl-encode?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl-encode","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/perl-encode?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl-encode","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/perl-encode?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-36770.json"}},{"package":{"name":"perl-encode","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/perl-encode?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-r0"}]}],"ecosystem_specific":{},"database_spec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