PT-2017-9421 · Tcpdump+6 · Tcpdump+6
Published
2017-01-27
·
Updated
2024-06-15
·
CVE-2016-7930
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
tcpdump versions prior to 4.9.0
Description
The issue is related to a buffer overflow in the LLC/SNAP parser and the ISO CLNS parser. Specifically, the buffer overflow occurs in the
llc print() function in print-llc.c and the clnp print() function in print-isoclns.c. This is caused by improper bounds checking, allowing a remote attacker to overflow a buffer by sending an overly long argument. This could lead to the execution of arbitrary code on the system or cause the application to crash.Recommendations
For versions prior to 4.9.0, update to version 4.9.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the
llc print() and clnp print() functions until a patch is available. Avoid using the affected parser functions in the vulnerable API endpoints until the issue is resolved.Exploit
Fix
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Ibm Aix
Red Hat
Suse
Ubuntu
Tcpdump