tcpdump: multiple overflow issues in protocol decoding
Published Jan 28, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.81%
Description
The ISO CLNS parser in tcpdump before 4.9.0 has a buffer overflow in print-isoclns.c:clnp_print().
Affected products
No data.
Configuration 2
- 8.0
- 9.0
Configuration 3
- 7.0
- 7.0
- 7.4
- 7.6
- 7.4
- 7.5
- 7.6
- 7.6
- 7.0
No data.
Red Hat Enterprise Linux 7
tcpdump-14:4.9.0-5.el7
Fixed · RHSA-2017:1871
Red Hat Enterprise Linux 5
tcpdump
Will not fix
Red Hat Enterprise Linux 6
tcpdump
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | tcpdump-14:4.9.0-5.el7 | Fixed | RHSA-2017:1871 |
| Red Hat Enterprise Linux 5 | tcpdump | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | tcpdump | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated these issues as having Moderate security impact. These issues may be fixed in a future minor release of Red Hat Enterprise Linux 7. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Red Hat mitigation
When invoked with the "-w" option, to write raw packets to a pcap file (for forensic purposes or offline examination), tcpdump does not use the protocol decoding subsystem and is not affected by these flaws. Red Hat Product Security recommends that any unattended uses of tcpdump use this option to ensure uninterrupted packet capture.
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:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.81% (0.03808) | 89.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.71% (0.03705) | 88.28th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.08% (0.01080) | 77.18th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.65% (0.02648) | 84.43th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.07% (0.01073) | 75.78th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.47% (0.02466) | 75.40th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.07% (0.01073) | 76.23th | v4 (v2025.03.14) |
| Dec 12, 2024 | 30.52% (0.30520) | 97.10th | v3 (v2023.03.01) |
| Jul 10, 2024 | 30.52% (0.30520) | 97.00th | v3 (v2023.03.01) |
| Nov 8, 2023 | 37.76% (0.37758) | 96.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 52.99% (0.52985) | 96.99th | 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 |
References (10)
- http://www.debian.org/security/2017/dsa-3775 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/95852 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037755 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1871 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-5202 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1419066 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-5202
- https://security.gentoo.org/glsa/201702-30 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-5202
- https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1494526.html x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3775 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.securityfocus.com/bid/95852 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1037755 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2017:1871 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-5202 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1419066 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-5202 | ||
| https://security.gentoo.org/glsa/201702-30 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-5202 | ||
| https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1494526.html | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.