Home/CVE/Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers
CVE

CVE-2020-10543

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

HIGH · CVSS 8.2 EPSS 0.04289
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules2 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

16
perl< 5.30.3
fedoraproject fedoraall versions
opensuse leapall versions
oracle communications billing and revenue managementall versions
oracle communications diameter signaling router>= 8.0.0 and <= 8.5.0
oracle communications eagle application processor>= 16.1.0 and <= 16.4.0
oracle communications eagle lnp application processorall versions
oracle communications lsms>= 13.1 and <= 13.4
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPotential Perl Reverse Shell Execution
productmediumPerl Inline Command Execution
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jun 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
⚑

Vendor Advisories

16
suse-csafopenSUSE-SU-2024:11158-1
siemens-csafSSA-398330
rhsaRHSA-2026:6206Moderate
usnUSN-4602-2
usnUSN-4602-1
🔗

References & Sources

14
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.htmlMailing ListThird Party Advisory
https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.podThird Party Advisory
https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3Third Party Advisory
https://github.com/perl/perl5/commit/897d1f7fd515b828e4b198d8b8bef76c6faf03edPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IN3TTBO5KSGWE5IRIKDJ5JSQRH7ANNXE/
https://security.gentoo.org/glsa/202006-03Third Party Advisory
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