perl: heap buffer overflow in pp_pack.c
Published Apr 17, 2018
9.8
CRITICALCVSS 3.0
EPSS 10.67%
Description
Heap-based buffer overflow in the pack function in Perl before 5.26.2 allows context-dependent attackers to execute arbitrary code via a large item count.
Affected products
No data.
Configuration 1
- 7.0
- 8.0
- 9.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 17.10
No data.
Red Hat Hardened Images
perl-main-1.03-524.hum1
Fixed · RHSA-2026:6206
Red Hat Enterprise Linux 5
perl
Will not fix
Red Hat Enterprise Linux 6
perl
Will not fix
Red Hat Enterprise Linux 7
perl
Not affected
Red Hat Enterprise Linux 8
perl
Not affected
Red Hat Software Collections
rh-perl520-perl
Not affected
Red Hat Software Collections
rh-perl524-perl
Not affected
Red Hat Software Collections
rh-perl526-perl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Hardened Images | perl-main-1.03-524.hum1 | Fixed | RHSA-2026:6206 |
| Red Hat Enterprise Linux 5 | perl | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | perl | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | perl | Not affected | n/a |
| Red Hat Enterprise Linux 8 | perl | Not affected | n/a |
| Red Hat Software Collections | rh-perl520-perl | Not affected | n/a |
| Red Hat Software Collections | rh-perl524-perl | Not affected | n/a |
| Red Hat Software Collections | rh-perl526-perl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat 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/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (39 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.67% (0.10668) | 95.68th | v5 (v2026.06.15) |
| Sep 22, 2026 | 10.87% (0.10866) | 95.66th | v5 (v2026.06.15) |
| Sep 21, 2026 | 9.72% (0.09718) | 95.36th | v5 (v2026.06.15) |
| Sep 6, 2026 | 10.87% (0.10866) | 95.56th | v5 (v2026.06.15) |
| Sep 5, 2026 | 9.72% (0.09718) | 95.26th | v5 (v2026.06.15) |
| Aug 30, 2026 | 10.87% (0.10866) | 95.54th | v5 (v2026.06.15) |
| Aug 28, 2026 | 9.72% (0.09718) | 95.23th | v5 (v2026.06.15) |
| Aug 24, 2026 | 10.87% (0.10866) | 95.51th | v5 (v2026.06.15) |
| Aug 23, 2026 | 9.72% (0.09718) | 95.21th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.00% (0.11003) | 95.32th | v5 (v2026.06.15) |
| Dec 28, 2025 | 3.90% (0.03896) | 87.90th | v4 (v2025.03.14) |
| Dec 27, 2025 | 5.54% (0.05535) | 90.01th | v4 (v2025.03.14) |
| Nov 21, 2025 | 3.28% (0.03280) | 86.70th | v4 (v2025.03.14) |
| Nov 18, 2025 | 12.35% (0.12351) | 93.21th | v4 (v2025.03.14) |
| Oct 28, 2025 | 3.45% (0.03450) | 87.00th | v4 (v2025.03.14) |
| Oct 27, 2025 | 5.81% (0.05812) | 90.14th | v4 (v2025.03.14) |
| Oct 1, 2025 | 2.71% (0.02705) | 85.40th | v4 (v2025.03.14) |
| Jul 30, 2025 | 5.81% (0.05812) | 90.16th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.93% (0.02926) | 85.19th | v4 (v2025.03.14) |
| Mar 29, 2025 | 15.35% (0.15350) | 91.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.00% (0.03005) | 85.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.70% (0.01703) | 88.27th | v3 (v2023.03.01) |
| Mar 27, 2024 | 1.70% (0.01703) | 87.48th | v3 (v2023.03.01) |
| Feb 25, 2024 | 1.72% (0.01723) | 87.47th | v3 (v2023.03.01) |
| Dec 5, 2023 | 1.86% (0.01857) | 86.98th | v3 (v2023.03.01) |
| Nov 11, 2023 | 2.20% (0.02201) | 88.22th | v3 (v2023.03.01) |
| Oct 18, 2023 | 2.79% (0.02786) | 89.45th | v3 (v2023.03.01) |
| Sep 8, 2023 | 3.63% (0.03630) | 90.51th | v3 (v2023.03.01) |
| Jul 8, 2023 | 4.44% (0.04443) | 91.25th | v3 (v2023.03.01) |
| Apr 11, 2023 | 5.73% (0.05735) | 92.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 8.04% (0.08036) | 93.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.91% (0.03910) | 85.66th | v2 (v2022.01.01) |
| Jan 12, 2023 | 3.91% (0.03910) | 85.15th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.81% (0.03806) | 84.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.81% (0.03806) | 67.27th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.59% (0.03590) | 68.40th | v1 |
| Jan 6, 2022 | 3.59% (0.03590) | 68.10th | v1 |
| Sep 1, 2021 | 3.59% (0.03590) | 82.08th | v1 |
| Apr 14, 2021 | 3.59% (0.03590) | 0.00th | v1 |
References (13)
- http://www.securityfocus.com/bid/103953 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040681 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-6913 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1547772 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/04/msg00009.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-6913
- https://rt.perl.org/Public/Bug/Display.html?id=131844 x_refsource_CONFIRMVendor Advisory
- https://security.gentoo.org/glsa/201909-01 vendor-advisoryx_refsource_GENTOO
- https://usn.ubuntu.com/3625-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3625-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-6913
- https://www.debian.org/security/2018/dsa-4172 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2020.html x_refsource_MISC
Change history (0)
No recorded changes yet.