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CVE-2016-7973· NVD / CVE Program· CNA mitre

The AppleTalk parser in tcpdump before 4.9.0 has a buffer overflow in print-atalk.c, multiple functions.

CriticalCVSS 9.8 · v3.0—No exploit Fix available
Published
Jan 27, 2017
Updated
Jun 16, 2026
EPSS
3.2% · 88th percentile
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Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.2%

Affected systems

VendorProduct
tcpdumptcpdump

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tcpdump tcpdumpup to 4.8.1 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10tcpdumpbefore 4.9.0-r04.9.0-r0
Debian:12tcpdumpbefore 4.9.0-14.9.0-1
Debian:7tcpdumpbefore 4.9.0-1~deb7u14.9.0-1~deb7u1
Debian:8tcpdumpbefore 4.9.0-1~deb8u14.9.0-1~deb8u1
openSUSE:Tumbleweedtcpdumpbefore 4.99.1-1.24.99.1-1.2
SUSE:Linux Enterprise Server 11 SP4tcpdumpbefore 3.9.8-1.29.13.9.8-1.29.1

Same product

tcpdump: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-3798Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows remote attackers to execute arbitrary code via craf
    60This week
  • CVE-2017-11543tcpdump 4.9.0 has a buffer overflow in the sliplink_print function in print-sl.c.
    41Plan
  • CVE-2017-5484The ATM parser in tcpdump before 4.9.0 has a buffer overflow in print-atm.c:sig_print().
    41Plan
  • CVE-2017-5482The Q.933 parser in tcpdump before 4.9.0 has a buffer overflow in print-fr.c:q933_print(), a different vulnerability than CVE-2016-8575.
    41Plan
  • CVE-2017-5342In tcpdump before 4.9.0, a bug in multiple protocol parsers (Geneve, GRE, NSH, OTV, VXLAN and VXLAN GPE) could cause a buffer overflow in pr
    41Plan
  • CVE-2017-5341The OTV parser in tcpdump before 4.9.0 has a buffer overflow in print-otv.c:otv_print().
    41Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:tcpdump4.9.0-r0 · Alpine:v3.10Package registry (OSV)
debian:tcpdump4.9.0-1 · Debian:12Package registry (OSV)
opensuse:tcpdump4.99.1-1.2 · openSUSE:TumbleweedPackage registry (OSV)
suse:tcpdump3.9.8-1.29.1 · SUSE:Linux Enterprise Server 11 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records