Scientific Linux Security Update : perl on SL7.x i686/x86_64 (2021:0343)

high Nessus Plugin ID 146065
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


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


The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2021:0343-1 advisory.

- perl: heap-based buffer overflow in regular expression compiler leads to DoS (CVE-2020-10543)

- perl: corruption of intermediate language state of compiled regular expression due to integer overflow leads to DoS (CVE-2020-10878)

- perl: corruption of intermediate language state of compiled regular expression due to recursive S_study_chunk() calls leads to DoS (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: 146065

File Name: sl_20210202_perl_on_SL7_x.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/2/2021

Updated: 2/5/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-10878


Risk Factor: Medium

Score: 5.5


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


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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/2/2021

Vulnerability Publication Date: 6/5/2020

Reference Information

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