Oracle Linux 7 : perl (ELSA-2021-0343)

high Nessus Plugin ID 146083


The remote Oracle Linux host is missing one or more security updates.


The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0343 advisory.

- Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow. (CVE-2020-10543)

- Perl before 5.30.3 has an integer overflow related to mishandling of a PL_regkind[OP(n)] == NOTHING situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection. (CVE-2020-10878)

- regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls. (CVE-2020-12723)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 146083

File Name: oraclelinux_ELSA-2021-0343.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/3/2021

Updated: 2/5/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.2


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2020-10878


Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:perl, p-cpe:/a:oracle:linux:perl-CPAN, p-cpe:/a:oracle:linux:perl-ExtUtils-CBuilder, p-cpe:/a:oracle:linux:perl-ExtUtils-Embed, p-cpe:/a:oracle:linux:perl-ExtUtils-Install, p-cpe:/a:oracle:linux:perl-IO-Zlib, p-cpe:/a:oracle:linux:perl-Locale-Maketext-Simple, p-cpe:/a:oracle:linux:perl-Module-CoreList, p-cpe:/a:oracle:linux:perl-Module-Loaded, p-cpe:/a:oracle:linux:perl-Object-Accessor, p-cpe:/a:oracle:linux:perl-Package-Constants, p-cpe:/a:oracle:linux:perl-Pod-Escapes, p-cpe:/a:oracle:linux:perl-Time-Piece, p-cpe:/a:oracle:linux:perl-core, p-cpe:/a:oracle:linux:perl-devel, p-cpe:/a:oracle:linux:perl-libs, p-cpe:/a:oracle:linux:perl-macros, p-cpe:/a:oracle:linux:perl-tests

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 2/3/2021

Vulnerability Publication Date: 6/5/2020

Reference Information

CVE: CVE-2020-10543, CVE-2020-10878, CVE-2020-12723