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Fencer Vulns
high 7.5

CVE-2018-11355 json

In Wireshark 2.6.0, the RTCP dissector could crash.

published 2018-05-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-3391

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

In Wireshark 2.6.0, the RTCP dissector could crash. This was addressed in epan/dissectors/packet-rtcp.c by avoiding a buffer overflow for packet status chunks.

Patch / fix

  • wireshark SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +3 more 3.2.2-3.35.2
  • spandsp SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +3 more 0.0.6-3.2.1
  • libmaxminddb SLES for SAP 15, SLES 15-LTSS, SLE Module for Basesystem 15 SP1 +2 more 1.4.2-1.3.1
  • wireshark SLES 12 SP3, SLES 12 SP2-BCL, SLED 12 SP3 +9 more 2.4.9-48.29.1
  • wireshark SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 2.2.16-40.28.1

suse advisories SUSE-SU-2020:0693-1SUSE-SU-2018:2891-2SUSE-SU-2018:2891-1SUSE-SU-2018:2412-1

  • wireshark openSUSE Tumbleweed 3.4.8-1.2
  • wireshark openSUSE Leap 15.1 3.2.2-lp151.2.9.1
  • spandsp openSUSE Leap 15.1 0.0.6-lp151.3.3.1
  • libmaxminddb openSUSE Leap 15.1 1.4.2-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:11513-1openSUSE-SU-2020:0362-1

  • wireshark-cli Arch Linux 2.6.1-1
  • wireshark-qt Arch Linux 2.6.1-1

arch linux advisories AVG-708

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-11355 updated cvss 5.9

wireshark: Heap-based Buffer Overflow in packet-rtcp.c

  • Red Hat Enterprise Linux 5 wireshark Red Hat Enterprise Linux 6 wireshark, wireshark-gnome Red Hat Enterprise Linux 7 wireshark, wireshark-gnome Red Hat Enterprise Linux 8 wireshark, wireshark-cli
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.00% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.