Untrusted Search Path Affecting perl package, versions <5.32.1-3ubuntu3
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Test your applications- Snyk ID SNYK-UBUNTU2110-PERL-1735825
- published 10 Aug 2021
- disclosed 11 Aug 2021
Introduced: 10 Aug 2021
CVE-2021-36770 Open this link in a new tabHow to fix?
Upgrade Ubuntu:21.10 perl to version 5.32.1-3ubuntu3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perl package and not the perl package as distributed by Ubuntu.
See How to fix? for Ubuntu:21.10 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-36770
- https://github.com/dankogai/p5-encode/commit/527e482dc70b035d0df4f8c77a00d81f8d775c74
- https://github.com/Perl/perl5/commit/c1a937fef07c061600a0078f4cb53fe9c2136bb9
- https://metacpan.org/dist/Encode/changes
- https://news.cpanel.com/unscheduled-tsr-10-august-2021/
- https://security.netapp.com/advisory/ntap-20210909-0003/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/
- https://security-tracker.debian.org/tracker/CVE-2021-36770
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NDGQSGMEZ75FJGBKNYC75OTO7TF7XHB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6KOZYD7BH2DNIAEZ2ZL4PJ4QUVQI6Y33/