CVE-2018-18311: Buffer Overflow
A flaw was found in Perl versions 5.8.0 through 5.28. An Integer overflow leading to buffer overflow in Perlmysetenv function in util.c
Upstream Patch: https://github.com/Perl/perl5/commit/34716e2a6ee2af96078d62b065b7785c001194be
Other sources
Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
— Launchpad
Perl. Multiple issues in Perl were addressed in this update.
Credit
Affected Software
Remediation
Patch Available
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2019-6203
- CVE-2019-8531
- CVE-2019-8538
- CVE-2019-8534
- CVE-2019-8555
- CVE-2019-6239
- CVE-2019-8516
- CVE-2019-8552
- CVE-2019-8511
- CVE-2019-8542
- CVE-2019-8522
- CVE-2019-8550
- CVE-2019-8777
- CVE-2019-8565
- CVE-2019-8521
- CVE-2019-8906
- CVE-2019-8519
- CVE-2019-8533
- CVE-2019-8545
- CVE-2019-8504
- CVE-2019-8529
- CVE-2018-4448
- CVE-2019-5608
- CVE-2019-8527
- CVE-2019-8528
- CVE-2019-8508
- CVE-2019-8514
- CVE-2019-8540
- CVE-2019-7293
- CVE-2019-6207
- CVE-2019-8510
- CVE-2019-8547
- CVE-2019-8525
- CVE-2018-4433
- CVE-2019-8642
- CVE-2019-8645
- CVE-2019-8546
- CVE-2019-8579
- CVE-2019-8537
- CVE-2019-8561
- CVE-2018-12015
- CVE-2018-18311
- CVE-2018-18313
- CVE-2019-8549
- CVE-2019-8507
- CVE-2019-8618
- CVE-2019-8526
- CVE-2019-8520
- CVE-2019-8502
- CVE-2019-8513
- CVE-2019-8569
- CVE-2019-8517
- CVE-2019-8564
- CVE-2019-8612
- CVE-2019-8567
- CVE-2019-6238
- CVE-2019-8530
Frequently Asked Questions
What is the severity of CVE-2018-18311?
The severity of CVE-2018-18311 is critical with a severity value of 9.8.
What is affected by CVE-2018-18311?
Perl versions before 5.26.3 and 5.28.x before 5.28.1 are affected. Some Ubuntu, Debian, Red Hat, Apple macOS, and other products are also affected.
How does CVE-2018-18311 work?
CVE-2018-18311 is a buffer overflow vulnerability that can be triggered by a crafted regular expression, leading to invalid write operations.
How can I fix CVE-2018-18311?
Update Perl to version 5.26.3 or apply the relevant security patches provided by your Linux distribution or vendor.
Where can I find more information about CVE-2018-18311?
You can find more information about CVE-2018-18311 at the following references: [seclists.org](http://seclists.org/fulldisclosure/2019/Mar/49), [securityfocus.com](http://www.securityfocus.com/bid/106145), [securitytracker.com](http://www.securitytracker.com/id/1042181).