USN-4602-1: Perl vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• perl - Practical Extraction and Report Language

Details

ManhND discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2020-10543)

Hugo van der Sanden and Slaven Rezic discovered that Perl incorrectly
handled certain regular expressions. In environments where untrusted
regular expressions are evaluated, a remote attacker could possibly use
this issue to cause Perl to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2020-10878)

Sergey Aleynikov discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2020-12723)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

• perl - 5.30.0-9ubuntu0.2

Ubuntu 18.04

• perl - 5.26.1-6ubuntu0.5

Ubuntu 16.04

• perl - 5.22.1-9ubuntu0.9

In general, a standard system update will make all the necessary changes.

References

• CVE-2020-10543
• CVE-2020-12723
• CVE-2020-10878

Related notices

• USN-4602-2: libperl-dev, perl-base, libcgi-fast-perl, perl-doc, libperl5.18, perl-debug, perl-modules, perl, libperl5.14