HIGH
wireshark: Pcapng file parser crash in pcapng.c
Published Feb 23, 2018
7.5
HIGHCVSS 3.0
EPSS 2.74%
Description
In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 7.0
- 8.0
No data.
Red Hat Enterprise Linux 6
wireshark
Not affected
Red Hat Enterprise Linux 7
wireshark
Not affected
Red Hat Enterprise Linux 8
wireshark
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | wireshark | Not affected | n/a |
| Red Hat Enterprise Linux 7 | wireshark | Not affected | n/a |
| Red Hat Enterprise Linux 8 | wireshark | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
3.3 LOW Red Hat
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.74% 0.02744
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02744
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.74% (0.02744) | 85.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.82% (0.02821) | 84.69th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.10% (0.02098) | 82.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.81% (0.03809) | 79.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.10% (0.02098) | 82.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00222) | 61.44th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.22% (0.00222) | 60.39th | v3 (v2023.03.01) |
| Sep 19, 2023 | 0.16% (0.00161) | 52.37th | v3 (v2023.03.01) |
| Aug 26, 2023 | 0.18% (0.00177) | 54.16th | v3 (v2023.03.01) |
| Jul 17, 2023 | 0.15% (0.00152) | 50.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00183) | 53.77th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v1 |
| Jan 6, 2022 | 1.45% (0.01454) | 31.96th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://www.securityfocus.com/bid/103163 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-7420 Vendor Advisory
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1549284 Issue Tracking
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9f63885ad8224ef413c2860788fb9e849 x_refsource_CONFIRM
- https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-7420
- https://www.cve.org/CVERecord?id=CVE-2018-7420
- https://www.wireshark.org/security/wnpa-sec-2018-11.html x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103163 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-7420 | Vendor Advisory | |
| https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403 | x_refsource_CONFIRMIssue TrackingVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1549284 | Issue Tracking | |
| https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9f63885ad8224ef413c2860788fb9e849 | x_refsource_CONFIRM | |
| https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-7420 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-7420 | ||
| https://www.wireshark.org/security/wnpa-sec-2018-11.html | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 23, 2018
Updated Aug 5, 2024
Reserved Feb 22, 2018
Link CVE-2018-7420
CISA Vulnrichment
Updated n/a