Multiple vulnerabilities in Perl



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-10543
CVE-2020-10878
CVE-2020-12723
CWE-ID CWE-190
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Perl
Universal components / Libraries / Scripting languages

Vendor Perl

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU29014

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-10543

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in nested regular expression quantifiers. A remote attacker can pass specially crafted data to the application, trigger integer overflow, leading to heap-based buffer 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: 5.003 - 5.30.2

CPE2.3 External links

https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
https://github.com/perl/perl5/commit/897d1f7fd515b828e4b198d8b8bef76c6faf03ed
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3
https://security.gentoo.org/glsa/202006-03
https://security.netapp.com/advisory/ntap-20200611-0001/


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.

2) Integer overflow

EUVDB-ID: #VU29015

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-10878

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

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: 5.003 - 5.30.2

CPE2.3 External links

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


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.

3) Buffer overflow

EUVDB-ID: #VU29016

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12723

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) áttack.

The vulnerability exists due to a boundary error within the recursive "S_study_chunk" calls. A remote attacker can use a specially crafted regular expression , trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Perl: 5.003 - 5.30.2

CPE2.3 External links

https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
https://github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3
https://github.com/Perl/perl5/issues/16947
https://github.com/Perl/perl5/issues/17743
https://security.gentoo.org/glsa/202006-03
https://security.netapp.com/advisory/ntap-20200611-0001/


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.



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