Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2023.3065
USN-6112-1: Perl vulnerability
30 May 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Perl
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-31484
Original Bulletin:
https://ubuntu.com/security/notices/USN-6112-1
Comment: CVSS (Max): 8.1 CVE-2023-31484 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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USN-6112-1: Perl vulnerability
29 May 2023
Perl could be made to install modules from untrusted sources.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Releases
o Ubuntu 18.04 ESM
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o perl - Practical Extraction and Report Language
Details
It was discovered that Perl was not properly verifying TLS certificates
when using CPAN together with HTTP::Tiny to download modules over HTTPS.
If a remote attacker were able to intercept communications, this flaw
could potentially be used to install altered modules.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04
o perl - 5.26.1-6ubuntu0.7
Ubuntu 16.04
o perl - 5.22.1-9ubuntu0.9+esm2
Available with Ubuntu Pro
Ubuntu 14.04
o perl - 5.18.2-2ubuntu1.7+esm5
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-31484
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