Description
The init_t38_info_conv function in epan/dissectors/packet-t38.c in the T.38 dissector in Wireshark 1.12.x before 1.12.9 does not ensure that a conversation exists, which allows remote attackers to cause a denial of service (application crash) via a crafted packet.
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 | 2.0.1+g59ea380-1 | — |
| Debian 13 | wireshark | 2.0.1+g59ea380-1 | — |
| Debian 12 | wireshark | 2.0.1+g59ea380-1 | — |
| Debian 8 | wireshark | 1.12.1+g01b65bf-4+deb8u4 | DSA-3505-1 |
| Debian 7 | wireshark | 1.8.2-5wheezy17 | DSA-3505-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wireshark | 2.2.6+g32dac6a-2ubuntu0.16.04 | — |
| Ubuntu 14.04 LTS | wireshark | 1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | wireshark | 1.12.9-22.1 | SUSE-SU-2016:0109-1 |
| SLES 12 | wireshark | 1.12.9-22.1 | SUSE-SU-2016:0109-1 |
| SLES 11 SP4 | wireshark | 1.12.9-0.12.1 | SUSE-SU-2016:0110-1 |
| SLES 11 SP3 | wireshark | 1.12.9-0.12.1 | SUSE-SU-2016:0110-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | wireshark | 1.12.9-22.1 | SUSE-SU-2016:0109-1 |
| SLES for SAP 12 | wireshark | 1.12.9-22.1 | SUSE-SU-2016:0109-1 |
| SLES for SAP 11 SP4 | wireshark | 1.12.9-0.12.1 | SUSE-SU-2016:0110-1 |
| SLES for SAP 11 SP3 | wireshark | 1.12.9-0.12.1 | SUSE-SU-2016:0110-1 |
Advisories 3
- DSA-3505-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:0110-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0109-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=eb6ccb1b0c4ad02b828652c3fe6e8d51c30a315e
- DSA-3505 vendor-advisory
- 79816 vdb-entry
- GLSA-201604-05 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9887
- http://www.wireshark.org/security/wnpa-sec-2015-35.html
- 1034551 vdb-entry