Integer Overflow or Wraparound

Affecting perl package, versions <5.26.1-6ubuntu0.5

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Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario.]

Remediation

Upgrade perl to version or higher.

References

CVSS Score

8.6
low severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    Low
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVE
CVE-2020-10878
CWE
CWE-190
Snyk ID
SNYK-UBUNTU1804-PERL-570822
Disclosed
05 Jun, 2020
Published
01 Jun, 2020