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9.8
CVE-2017-12894: tcpdump may read beyond buffer, risking crash
CVE-2017-12894 · published 9 years ago
Summary
The tcpdump network capture tool (versions before 4.9.2) can read past the end of a data buffer when processing certain network protocols. This could cause the program to stop working or be manipulated by attackers. Upgrade to version 4.9.2 or later, or apply any available patches, to avoid the issue.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| tcpdump | tcpdump |
<= 4.9.1 cpe:2.3:a:tcpdump:tcpdump:*:*:*:*:*:*:*:* |
Original advisory text
Several protocol parsers in tcpdump before 4.9.2 could cause a buffer over-read in addrtoname.c:lookup_bytestring().
Several protocol parsers in tcpdump before 4.9.2 could cause a buffer over-read in addrtoname.c:lookup_bytestring().
References
- http://www.debian.org/security/2017/dsa-3971
- http://www.securitytracker.com/id/1039307
- http://www.tcpdump.org/tcpdump-changes.txt Vendor Advisory
- https://access.redhat.com/errata/RHEA-2018:0705
- https://github.com/the-tcpdump-group/tcpdump/commit/730fc35968c5433b9e2a82977905... Issue Tracking Patch Third Party Advisory
- https://security.gentoo.org/glsa/201709-23
- https://support.apple.com/HT208221
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker full control
Type
CWE-125Out-of-bounds Read
Timeline
Published14 Sep 2017
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2017-12894 · NVD
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