The ARP parser in tcpdump before 4.9.0 has a buffer overflow in print-arp.c:arp_print().
Summary
The ARP parser in tcpdump before 4.9.0 has a buffer overflow in print-arp.c:arp_print().
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A weakness called CVE-2016-7923 was discovered in The ARP parser in tcpdump.
In plain terms, it is a flaw that writes outside the safe memory area.
Severity is Critical (CVSS 9.8/10). If exploited, attackers can fully take over the affected system.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "The ARP parser in tcpdump CVE-2016-7923".
CVE-2016-7923 (The ARP parser in tcpdump). Severity: Critical / CVSSv3 9.8. Category: CWE-119.
Response plan:
- Check the vendor advisory for affected versions and the patched release.
- If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
- If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
- Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
A weakness (CVE-2016-7923) in The ARP parser in tcpdump. In plain words, it is a flaw that writes outside the safe memory area.
Target versions of The ARP parser in tcpdump (see vendor advisory). If running in production, identify exposure immediately.
Severity: Critical (CVSS 9.8/10). If exploited, attackers can fully take over the affected system.
Update to the patched release as listed in the vendor advisory. (Typical mitigation pattern for CWE-119)
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2016-7923 tcpdump Fixed in: 4.9.0-r0
References
- advisory debian.org
- advisory securityfocus.com
- advisory access.redhat.com
- advisory security.gentoo.org
- web securitytracker.com
- web mail-archive.com