Vulnerability identifier: #VU29015

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10878

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Perl
Universal components / Libraries / Scripting languages

Vendor: Perl

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A remote attacker can use a specially crafted regular expression, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Perl: 5.30.0 - 5.30.2, 5.5 - 5.5.3, 5.4 - 5.4.5, 5.6 - 5.6.2, 5.18.4, 5.13.0 - 5.13.11, 5.10 - 5.10.1, 5.9.2, 5.8.0 - 5.8.10, 5.28.0 - 5.28.1, 5.24.0 - 5.24.1, 5.23.0 - 5.23.9, 5.26.0 - 5.26.2, 5.16, 5.15, 5.14.0 - 5.14.1, 5.12.0 - 5.12.3, 5.11.0 - 5.11.5, 5.22.2-1

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External links
http://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
http://github.com/perl/perl5/commit/0a320d753fe7fca03df259a4dfd8e641e51edaa8
http://github.com/perl/perl5/commit/3295b48defa0f8570114877b063fe546dd348b3c
http://github.com/Perl/perl5/compare/v5.30.2...v5.30.3
http://security.gentoo.org/glsa/202006-03
http://security.netapp.com/advisory/ntap-20200611-0001/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.