CVE-2018-6913

Impact:
Low
Public Date:
2018-04-14
CWE:
CWE-122
Bugzilla:
1547772: CVE-2018-6913 perl: heap buffer overflow in pp_pack.c
It was found that the pack() function in the 32-bit version of the perl interpreter was vulnerable to heap buffer overflow via the packing template. An attacker, able to provide a specially crafted template, could use this flaw to crash the interpreter.

Find out more about CVE-2018-6913 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

The 64-bit versions of perl have not been found to be affected. As a result, this issue did not affect the versions of perl as shipped with Red Hat Enterprise Linux 7, and the versions of rh-perl526-perl, rh-perl524-perl and rh-perl520-perl as shipped with Red Hat Software Collections.

This issue affects the 32bit versions of perl as shipped with Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Low, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

This issue may affect the versions of perl as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Extended Life Cycle phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 4
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact Low

Affected Packages State

Platform Package State
Red Hat Software Collections for Red Hat Enterprise Linux rh-perl524-perl Not affected
Red Hat Software Collections for Red Hat Enterprise Linux rh-perl526-perl Not affected
Red Hat Software Collections for Red Hat Enterprise Linux rh-perl520-perl Not affected
Red Hat Enterprise Linux 8 perl Not affected
Red Hat Enterprise Linux 7 perl Not affected
Red Hat Enterprise Linux 6 perl Will not fix
Red Hat Enterprise Linux 5 perl Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Perl 5 Porters for reporting this issue. Upstream acknowledges GwanYeong Kim as the original reporter.

External References

Last Modified