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CVE-2021-36770

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5033-1
Posted Aug 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5033-1 - It was discovered that the Perl Encode library incorrectly handled paths. A local attacker could possibly use this issue to trick the library into executing arbitrary code from the current working directory.

tags | advisory, arbitrary, local, perl
systems | linux, ubuntu
advisories | CVE-2021-36770
SHA-256 | 43bf451f88cc22741071b9ad5dbfe1b72d0c07e7068fce93827a8f638e309c17
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