Description
The dissect_sflow_245_address_type function in epan/dissectors/packet-sflow.c in the sFlow dissector in Wireshark 1.8.x before 1.8.4 does not properly handle length calculations for an invalid IP address type, which allows remote attackers to cause a denial of service (infinite loop) via a packet that is neither IPv4 nor IPv6.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wireshark | 1.8.6-1 | — |
| Debian 13 | wireshark | 1.8.6-1 | — |
| Debian 12 | wireshark | 1.8.6-1 | — |
| Debian 7 | wireshark | 1.12.1+g01b65bf-4+deb8u6~deb7u1 | DLA-497-1 |
Advisories 1
- DLA-497-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7789
- http://www.wireshark.org/security/wnpa-sec-2012-32.html
- oval:org.mitre.oval:def:15764 vdb-entry signature
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=45324
- http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-sflow.c?r1=45324&r2=45323&pathrev=45324
- openSUSE-SU-2012:1633 vendor-advisory
- openSUSE-SU-2013:0151 vendor-advisory